Zinc

mineral
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Zinc helps the body build proteins and DNA, repair tissues, and maintain immune defenses. It supports hundreds of enzyme reactions involved in growth, metabolism, and everyday cell function. These roles make zinc important for skin health, wound healing, and normal growth during pregnancy, childhood, and adolescence. Zinc also contributes to reproductive health, taste and smell, antioxidant defenses, and thyroid function. Different supplement forms offer different absorption, tolerability, and cost profiles. The sections below explain these differences and zinc’s relevance to individual health goals.

Natural sources
OystersRed meat (beef, pork)PoultryBeansNuts (cashews, almonds)Whole grainsDairy products (milk, yogurt)Certain seafood (crab, lobster)Fortified cereals

Ingredient forms

No public comparison lists found.

Timing & Intake
AnytimeWith food
Take with food if zinc causes nausea or stomach discomfort.
Daily Intake
RDA (Men)11 mg
RDA (Women)8 mg
RDI11 mg
Optimal Dosage
Minimum15 mg
Maximum30 mg
Safety & Toxicity
Upper Limit (UL)40 mg
Toxicity Threshold100 mg
Toxicity EffectNausea, vomiting, immune suppression
4 safety notes
  • Do not exceed recommended dosages as high intake can be toxic and lead to adverse effects.
  • Prolonged high-dose zinc supplementation can interfere with copper absorption and potentially lead to copper deficiency.
  • Individuals with pre-existing medical conditions, especially those related to immune function or metal metabolism, should consult a healthcare professional before supplementing with zinc.
  • May interact with certain medications, including antibiotics and diuretics.
Goals
Digestive Health
Digestive Health
Impact
Highest effect
Typical dose:15–30 mg
Zinc is a key cofactor for enzymes involved in cell repair and regeneration. It plays a direct role in regulating the stability of intestinal tight junctions, and deficiency can lead to increased gut permeability. A well-absorbed form like zinc carnosine is particularly effective.

Study evidence

130 studies

Zinc can shorten childhood diarrhea and may help prevent episodes, particularly in settings where zinc deficiency is common. Benefits vary by age and context, vomiting is more frequent with supplementation, and this evidence does not establish better everyday digestion in well-nourished adults.

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Hair Health
Hair Health
Impact
Highest effect
Typical dose:15–30 mg
Zinc is vital for DNA and RNA production, which is required for the normal division of hair follicle cells, leading to healthier hair growth. It also helps balance hormones and keep the oil glands around the follicles working properly. Supplementation can be highly effective for hair loss caused by zinc deficiency.

Study evidence

22 studies

Lower zinc levels are associated with some types of hair loss, but findings are inconsistent and do not establish that oral zinc supplements improve hair growth. Benefits reported for zinc-containing shampoos concern topical scalp treatment and cannot be assumed for dietary supplements.

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Immunity
Immunity
Impact
Highest effect
Typical dose:15–50 mg
Zinc is a critical cofactor for hundreds of enzymes and is vital for immune cell (T-cells, NK cells) proliferation and communication. Adequate levels are required for a proper immune response, while acute supplementation can inhibit viral replication in the upper respiratory tract.

Study evidence

73 studies

Zinc is essential for normal immunity, and correcting inadequate intake can help in vulnerable populations. Supplementation may reduce some childhood diarrheal illness and shorten respiratory symptoms, but it does not consistently prevent infections or provide a general immune boost when zinc intake is adequate.

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Metabolism Boost
Metabolism Boost
Impact
Highest effect
Typical dose:11–30 mg
Zinc is required for the synthesis of Thyroid Releasing Hormone (TRH) and for the proper function of thyroid receptors. It also plays a key role in insulin synthesis, storage, and secretion. A deficiency in zinc can directly impair both thyroid function and insulin sensitivity, making adequate levels foundational for a healthy metabolism.

Study evidence

12 studies

Zinc supplementation can improve blood sugar control and some blood fats in people with diabetes or related metabolic problems. These findings do not establish a faster metabolic rate, greater calorie burning or reliable weight loss, particularly in people without those conditions.

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Productivity Boost
Productivity Boost
Impact
Highest effect
Typical dose:15–40 mg
Zinc is highly concentrated in the brain and plays a vital role in synaptic plasticity and communication between neurons. It also acts as an antioxidant. Deficiency can impair learning, memory, and mood, making adequate levels a key component of optimal cognitive function.

Study evidence

11 studies

Zinc may support certain cognitive skills when nutritional status is poor, particularly in children and adolescents. The supplied research does not establish that zinc supplements boost adult productivity, improve workplace performance or enhance everyday focus in people who already have adequate zinc.

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Skin Health
Skin Health
Impact
Highest effect
Typical dose:15–30 mg
Zinc is essential for the function of enzymes involved in skin repair and cell turnover. It possesses anti-inflammatory properties, making it particularly effective for managing inflammatory conditions like acne, and plays a role in protecting against UV-induced damage.

Study evidence

66 studies

Zinc is important for normal skin function, and zinc treatments can help some conditions, particularly inflammatory acne and certain forms of dermatitis. Benefits depend on the formulation and problem being treated; oral supplements have not consistently improved wound healing or general skin health.

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Showing 6 of 25 goals

Studies

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Interactions

Positive Interactions

Vitamin C
Both zinc and Vitamin C are crucial for immune function and are often taken together for synergistic immune support.
Vitamin A
Zinc is necessary for the metabolism and utilization of Vitamin A, including its transport from the liver and conversion to its active form.
Biotin
Zinc is a cofactor for enzymes involved in biotin metabolism.
Folate
Zinc is involved in the absorption and metabolism of folate.
Vitamin B6
Zinc and Vitamin B6 are cofactors for many enzymes and work synergistically in various metabolic pathways.
Vitamin D
Both zinc and Vitamin D are important for immune function and bone health, potentially offering complementary benefits.
Magnesium
Zinc and Magnesium often work together in various enzymatic reactions and cellular processes, supporting overall metabolic health.
Selenium
Both zinc and selenium are important antioxidants and support immune function, often found together in immune support formulations.

Negative Interactions

Iron
High doses of zinc can inhibit the absorption of iron, and vice versa. It's often recommended to take them at different times or in balanced ratios.
Copper
High doses of zinc can interfere with copper absorption, potentially leading to copper deficiency. Zinc supplements sometimes include copper to maintain balance.
Calcium
Very high doses of calcium might slightly interfere with zinc absorption, though this interaction is generally less significant compared to iron or copper.
Sources

Up to five highest-ranked published examples per goal. Study counts and charts include all published studies for the connection.

  1. Oral zinc supplementation for the treatment of acute diarrhea in children: a systematic review and meta-analysis.
    Lamberti LM; Walker CL; Chan KY; Jian WY; Black RE · Nutrients · 2014
    Meta-analysis18,822 participants104 studies pooledDigestive Health
  2. Zinc with oral rehydration therapy reduces stool output and duration of diarrhea in hospitalized children: a randomized controlled trial.
    Bhatnagar S; Bahl R; Sharma PK; Kumar GT; Saxena SK; Bhan MK · Journal of pediatric gastroenterology and nutrition · 2004
    Randomized trial287 participantsDigestive Health
  3. Lower-Dose Zinc for Childhood Diarrhea - A Randomized, Multicenter Trial.
    Dhingra U; Kisenge R; Sudfeld CR; Dhingra P; Somji S; Dutta A; Bakari M; Deb S; Devi P; Liu E; Chauhan A; Kumar J; Semwal OP; Aboud S; Bahl R; Ashorn P; Simon J; Duggan CP; Sazawal S; Manji K · The New England journal of medicine · 2020
    Randomized trial4,500 participantsDigestive Health
  4. Zinc supplementation in young children with acute diarrhea in India.
    Sazawal S; Black RE; Bhan MK; Bhandari N; Sinha A; Jalla S · The New England journal of medicine · 1995
    Randomized trial937 participantsDigestive HealthGeneral Health
  5. Short-course prophylactic zinc supplementation for diarrhea morbidity in infants of 6 to 11 months.
    Malik A; Taneja DK; Devasenapathy N; Rajeshwari K · Pediatrics · 2013
    Randomized trial272 participantsDigestive Health
  6. The effects of minoxidil, 1% pyrithione zinc and a combination of both on hair density: a randomized controlled trial.
    Berger RS; Fu JL; Smiles KA; Turner CB; Schnell BM; Werchowski KM; Lammers KM · The British journal of dermatology · 2003
    Randomized trial200 participantsHair Health
  7. Incubatory environment of the scalp impacts pre-emergent hair to affect post-emergent hair cuticle integrity.
    Schwartz JR; Henry JP; Kerr KM; Flagler MJ; Page SH; Redman-Furey N · Journal of cosmetic dermatology · 2018
    Randomized trialHair Health
  8. A comparison of hair quality and cosmetic acceptance following the use of two anti-dandruff shampoos.
    Draelos ZD; Kenneally DC; Hodges LT; Billhimer W; Copas M; Margraf C · The journal of investigative dermatology. Symposium proceedings · 2006
    Randomized trial40 participantsHair Health
  9. BMI and levels of zinc, copper in hair, serum and urine of Turkish male patients with androgenetic alopecia.
    Ozturk P; Kurutas E; Ataseven A; Dokur N; Gumusalan Y; Gorur A; Tamer L; Inaloz S · Journal of trace elements in medicine and biology : organ of the Society for Minerals and Trace Elements (GMS) · 2015
    Case-control study216 participantsHair Health
  10. Analysis of serum zinc and copper concentrations in hair loss.
    Kil MS; Kim CW; Kim SS · Annals of dermatology · 2013
    Case-control study342 participantsHair Health
  11. Nutrient supplementation for prevention of viral respiratory tract infections in healthy subjects: A systematic review and meta-analysis.
    Vlieg-Boerstra B; de Jong N; Meyer R; Agostoni C; De Cosmi V; Grimshaw K; Milani GP; Muraro A; Oude Elberink H; Pali-Schöll I; Roduit C; Sasaki M; Skypala I; Sokolowska M; van Splunter M; Untersmayr E; Venter C; O'Mahony L; Nwaru BI · Allergy · 2022
    Meta-analysis199,055 participants115 studies pooledImmunity
  12. Zinc supplementation reduces the incidence of acute lower respiratory infections in infants and preschool children: a double-blind, controlled trial.
    Sazawal S; Black RE; Jalla S; Mazumdar S; Sinha A; Bhan MK · Pediatrics · 1998
    Randomized trial609 participantsImmunity
  13. A randomized controlled trial of zinc supplementation in the treatment of acute respiratory tract infection in Thai children.
    Rerksuppaphol S; Rerksuppaphol L · Pediatric reports · 2020
    Randomized trial64 participantsImmunity
  14. The effect of zinc and vitamin A supplementation on immune response in an older population.
    Fortes C; Forastiere F; Agabiti N; Fano V; Pacifici R; Virgili F; Piras G; Guidi L; Bartoloni C; Tricerri A; Zuccaro P; Ebrahim S; Perucci CA · Journal of the American Geriatrics Society · 1998
    Randomized trial136 participantsImmunity
  15. The role of specific nutrients in preventing immune system and blood cell disorders: an umbrella review.
    Vecchietti A; Strano P; Minutolo G; Grieco V; Cappuccio G; Granvillano G; Confalonieri L; Briganti GL; Raso E; Chimienti M; Pellegrini M; Mercogliano M; Spatari G; Lugli C; Urbano T; Lorenzon A · Journal of preventive medicine and hygiene · 2026
    Systematic review13 studies pooledImmunity
  16. The effect of curcumin and zinc co-supplementation on glycemic parameters in overweight or obese prediabetic subjects: A phase 2 randomized, placebo-controlled trial with a multi-arm, parallel-group design.
    Karandish M; Mozaffari-Khosravi H; Mohammadi SM; Cheraghian B; Azhdari M · Phytotherapy research : PTR · 2021
    Randomized trial84 participantsWeight LossMetabolism Boost
  17. Relationship between zinc and glucose metabolism in Japanese adults.
    Suka M; Tsuruta H; Takao T; Yanagisawa H · Diabetology international · 2026
    Cross-sectional study533 participantsMetabolism Boost
  18. Zinc and the Innovative Zinc-α2-Glycoprotein Adipokine Play an Important Role in Lipid Metabolism: A Critical Review.
    Banaszak M; Górna I; Przysławski J · Nutrients · 2021
    Narrative reviewMetabolism Boost
  19. Capsaicin and Zinc Signalling Pathways as Promising Targets for Managing Insulin Resistance and Type 2 Diabetes.
    Ferdowsi PV; Ahuja KDK; Beckett JM; Myers S · Molecules (Basel, Switzerland) · 2023
    Narrative reviewMetabolism Boost
  20. Zinc and Diabetes: A Connection between Micronutrient and Metabolism.
    Ahmad R; Shaju R; Atfi A; Razzaque MS · Cells · 2024
    Narrative reviewMetabolism Boost
  21. Zinc supplementation improved cognitive performance and taste acuity in Indian adolescent girls.
    Tupe RP; Chiplonkar SA · Journal of the American College of Nutrition · 2010
    Randomized trial180 participantsProductivity Boost
  22. Effects of Physical Activity and Micronutrients on Cognitive Performance in Children Aged 6 to 11 Years: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.
    Meli AM; Ali A; Mhd Jalil AM; Mohd Yusof H; Tan MMC · Medicina (Kaunas, Lithuania) · 2022
    Meta-analysisProductivity Boost
  23. Linkages of biomarkers of zinc with cognitive performance and taste acuity in adolescent girls.
    Chiplonkar SA; Kawade R · International journal of food sciences and nutrition · 2015
    Cross-sectional study403 participantsProductivity Boost
  24. Associations Between Serum Selenium, Zinc, and Copper Levels and Cognitive Function in the Elderly.
    Charernwat P; Chansirikarnjana S; Panpunuan P; Sritara P; Sirivarasai J · Nutrients · 2025
    Cross-sectional study854 participantsProductivity Boost
  25. Comparative analysis of methyl-donor nutrient intakes and RCPM cognitive performance among school-aged children.
    Apprey C; Asamoah-Boakye O; Annaful VT; Annan RA · Clinical nutrition ESPEN · 2022
    Cross-sectional study2,073 participantsProductivity Boost
  26. Sex-related differences in response to zinc pyrithione shampoo vs. non-anti-dandruff shampoo.
    Collins LZ; Baines FL; Matheson JR; Turner GA; Diao Y; Li Y; Pi Y · International journal of cosmetic science · 2019
    Meta-analysis2,088 participants20 studies pooledSkin Health
  27. Maintenance of an Acidic Skin Surface with a Novel Zinc Lactobionate Emollient Preparation Improves Skin Barrier Function in Patients with Atopic Dermatitis.
    Andrew PV; Pinnock A; Poyner A; Brown K; Chittock J; Kay LJ; Cork MJ; Danby SG · Dermatology and therapy · 2024
    Cohort study23 participantsSkin Health
  28. Spatial expression of metallothionein, matrix metalloproteinase-1 and Ki-67 in human epidermal wounds treated with zinc and determined by quantitative immunohistochemistry: A randomised double-blind trial.
    Ågren MS; Chafranska L; Eriksen JO; Forman JL; Bjerrum MJ; Schjerling P; Larsen HF; Cottarelli E; Jorgensen LN; Gjerdrum LMR · European journal of cell biology · 2021
    Randomized trial30 participantsSkin Health
  29. A pilot trial using topical regular crystalline insulin vs. aqueous zinc solution for uncomplicated cutaneous wound healing: Impact on quality of life.
    Attia EA; Belal DM; El Samahy MH; El Hamamsy MH · Wound repair and regeneration : official publication of the Wound Healing Society [and] the European Tissue Repair Society · 2014
    Randomized trial90 participantsSkin Health
  30. Evidence-Based Nutritional Interventions in Wound Care.
    Saeg F; Orazi R; Bowers GM; Janis JE · Plastic and reconstructive surgery · 2021
    Systematic review2,339 participants36 studies pooledSkin Health
  31. Environmental exposure to metals and male reproductive hormones: circulating testosterone is inversely associated with blood molybdenum.
    Meeker JD; Rossano MG; Protas B; Padmanahban V; Diamond MP; Puscheck E; Daly D; Paneth N; Wirth JJ · Fertility and sterility · 2010
    Cross-sectional study219 participantsTestosterone Support
  32. Nonpharmacological Interventions for the Management of Testosterone and Sperm Parameters: A Scoping Review.
    Santos HO; Cadegiani FA; Forbes SC · Clinical therapeutics · 2022
    Scoping reviewTestosterone Support
  33. Zinc is an Essential Element for Male Fertility: A Review of Zn Roles in Men's Health, Germination, Sperm Quality, and Fertilization.
    Fallah A; Mohammad-Hasani A; Colagar AH · Journal of reproduction & infertility · 2020
    Narrative reviewTestosterone Support
  34. Clinical, endocrinological and biochemical effects of zinc deficiency.
    Prasad AS · Clinics in endocrinology and metabolism · 1986
    Narrative reviewTestosterone Support
  35. Clinical, endocrinologic, and biochemical effects of zinc deficiency.
    Prasad AS · Special topics in endocrinology and metabolism · 1986
    Narrative reviewTestosterone Support
  36. Antioxidant vitamin and mineral supplements for age-related macular degeneration.
    Evans JR · The Cochrane database of systematic reviews · 2002
    Systematic review170 participants7 studies pooledVision Support
  37. Antioxidant vitamin and mineral supplements for slowing the progression of age-related macular degeneration.
    Evans JR; Lawrenson JG · The Cochrane database of systematic reviews · 2023
    Meta-analysis3,790 participants5 studies pooledVision Support
  38. Oral zinc in macular degeneration.
    Newsome DA; Swartz M; Leone NC; Elston RC; Miller E · Archives of ophthalmology (Chicago, Ill. : 1960) · 1988
    Randomized trial151 participantsVision Support
  39. A randomized, placebo-controlled, clinical trial of high-dose supplementation with vitamins C and E, beta carotene, and zinc for age-related macular degeneration and vision loss: AREDS report no. 8.
    Age-Related Eye Disease Study Research Group · Archives of ophthalmology (Chicago, Ill. : 1960) · 2001
    Randomized trial3,640 participantsVision Support
  40. Effect of vitamin A and zinc supplementation on the nutriture of children in Northeast Thailand.
    Udomkesmalee E; Dhanamitta S; Sirisinha S; Charoenkiatkul S; Tuntipopipat S; Banjong O; Rojroongwasinkul N; Kramer TR; Smith JC · The American journal of clinical nutrition · 1992
    Randomized trial133 participantsVision Support
  41. Increased incidence of fractures in middle-aged and elderly men with low intakes of phosphorus and zinc.
    Elmståhl S; Gullberg B; Janzon L; Johnell O; Elmståhl B · Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 1999
    Cohort study6,576 participantsBone Health
  42. Zinc Supplementation Increases Procollagen Type 1 Amino-Terminal Propeptide in Premenarcheal Girls: A Randomized Controlled Trial.
    Berger PK; Pollock NK; Laing EM; Chertin V; Bernard PJ; Grider A; Shapses SA; Ding KH; Isales CM; Lewis RD · The Journal of nutrition · 2016
    Randomized trial147 participantsBone Health
  43. Randomized controlled trial of prenatal zinc supplementation and fetal bone growth.
    Merialdi M; Caulfield LE; Zavaleta N; Figueroa A; Costigan KA; Dominici F; Dipietro JA · The American journal of clinical nutrition · 2004
    Randomized trial242 participantsBone Health
  44. The effects of zinc supplementation on serum zinc, alkaline phosphatase activity and fracture healing of bones.
    Sadighi A; Roshan MM; Moradi A; Ostadrahimi A · Saudi medical journal · 2009
    Randomized trial60 participantsBone Health
  45. Is Zinc an Important Trace Element on Bone-Related Diseases and Complications? A Meta-analysis and Systematic Review from Serum Level, Dietary Intake, and Supplementation Aspects.
    Ceylan MN; Akdas S; Yazihan N · Biological trace element research · 2021
    Meta-analysis40 studies pooledBone Health
  46. [Therapy of Wilson disease].
    Smolarek C; Stremmel W · Zeitschrift fur Gastroenterologie · 1999
    Narrative reviewDetoxification
  47. Efficacy of Zinc Supplement in Minimal hepatic Encephalopathy: A prospective, Randomized Controlled Study (Zinc-MHE Trial).
    Janyajirawong R; Vilaichone RK; Sethasine S · Asian Pacific journal of cancer prevention : APJCP · 2021
    Randomized trial69 participantsCognitive SupportBrain HealthDetoxification
  48. Effect of zinc on liver cirrhosis with hyperammonemia: a preliminary randomized, placebo-controlled double-blind trial.
    Katayama K; Saito M; Kawaguchi T; Endo R; Sawara K; Nishiguchi S; Kato A; Kohgo H; Suzuki K; Sakaida I; Ueno Y; Habu D; Ito T; Moriwaki H; Suzuki K · Nutrition (Burbank, Los Angeles County, Calif.) · 2015
    Randomized trial18 participantsDetoxification
  49. Effects of low dose zinc supplementation on biochemical markers in non-alcoholic cirrhosis: a randomized clinical trial.
    Somi MH; Rezaeifar P; Ostad Rahimi A; Moshrefi B · Archives of Iranian medicine · 2012
    Randomized trial60 participantsDetoxification
  50. Correlation of Serum Zinc Levels with Hepatic Encephalopathy Severity in Patients with Decompensated Liver Cirrhosis: A Prospective Observational Study from Egypt.
    Semeya AA; Elgamal R; Othman AAA · Biological trace element research · 2025
    Observational study200 participantsDetoxification
  51. Effectiveness of sodium bicarbonate and zinc chloride mouthwashes in the treatment of oral mucositis and quality of life in patients with cancer under chemotherapy.
    Mohammadi F; Oshvandi K; Kamallan SR; Khazaei S; Ranjbar H; Ahmadi-Motamayel F; Gillespie M; Jenabi E; Vafaei SY · Nursing open · 2022
    Randomized trial144 participantsGeneral Health
  52. Associations of mortality with ocular disorders and an intervention of high-dose antioxidants and zinc in the Age-Related Eye Disease Study: AREDS Report No. 13.
    Clemons TE; Kurinij N; Sperduto RD; AREDS Research Group · Archives of ophthalmology (Chicago, Ill. : 1960) · 2004
    Randomized trial4,753 participantsGeneral Health
  53. Effects of zinc and probiotic co-supplementation on inflammation, gastrointestinal symptoms, quality of life, and mood in irritable bowel syndrome patients.
    Rezazadegan M; Soheilipour M; Amani R · Scientific reports · 2026
    Randomized trial84 participantsGeneral Health
  54. Effect of zinc sulfate supplementation on premenstrual syndrome and health-related quality of life: Clinical randomized controlled trial.
    Siahbazi S; Behboudi-Gandevani S; Moghaddam-Banaem L; Montazeri A · The journal of obstetrics and gynaecology research · 2018
    Randomized trial142 participantsGeneral Health
  55. Effects of zinc supplementation on the anthropometric measurements, lipid profiles and fasting blood glucose in the healthy obese adults.
    Payahoo L; Ostadrahimi A; Mobasseri M; Khaje Bishak Y; Farrin N; Asghari Jafarabadi M; Mahluji S · Advanced pharmaceutical bulletin · 2013
    Randomized trial60 participantsWeight Loss
  56. Zinc supplementation improves body weight management, inflammatory biomarkers and insulin resistance in individuals with obesity: a randomized, placebo-controlled, double-blind trial.
    Khorsandi H; Nikpayam O; Yousefi R; Parandoosh M; Hosseinzadeh N; Saidpour A; Ghorbani A · Diabetology & metabolic syndrome · 2024
    Randomized trial40 participantsWeight Loss
  57. Effects of Zinc Supplementation on Anthropometric Indices and Adipokines in Adults: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.
    Salmani M; Karimi M; Asbaghi O; Bagheri R; Nikbaf-Shandiz M; Bakhtiary F; Goudarzi K; Kazemi K; Shouhani Z; Setayesh L; Haghighat N; Ashtary-Larky D · Biological trace element research · 2026
    Meta-analysis41 studies pooledWeight GainWeight Loss
  58. Serum zinc levels are associated with obesity and low-density lipoprotein cholesterol in Mexican adults.
    Hernández-Mendoza H; Martínez-Navarro I; Hernández-Ochoa E; Espinoza-Ruiz M; Lugo-Trampe A; Trujillo-Murillo KDC; López-García MA; Rios-Lugo MJ; Chang-Rueda C · Journal of trace elements in medicine and biology : organ of the Society for Minerals and Trace Elements (GMS) · 2022
    Meta-analysis172 participantsWeight Loss
  59. The Association between Dietary Nutrient Intake and Acceleration of Aging: Evidence from NHANES.
    Ma J; Li P; Jiang Y; Yang X; Luo Y; Tao L; Guo X; Gao B · Nutrients · 2024
    Cross-sectional study4,692 participantsAnti-Aging
  60. The immune system and the impact of zinc during aging.
    Haase H; Rink L · Immunity & ageing : I & A · 2010
    Narrative reviewAnti-Aging
  61. Associations between serum trace elements and biological age acceleration in the Chinese elderly: A community-based study investigating the mediating role of inflammatory markers and the moderating effect of physical activity.
    Wang Y; Zhu W; Zhang T; Liu Q; Zou M; Xie Y; Wang M; Wang TS; Pang Y; Jing T; Zhang R · Journal of hazardous materials · 2025
    Observational studyAnti-Aging
  62. Bidirectional associations of zinc supplement intake with biological ageing interacted by metabolic equivalent of task: A large-scale population-based Biobank study.
    Zhou Y; Zhou J; Li Z; Wang J; Li H; Yin X; Gao J; Wu Y; Li J; Sun YX; Li Y; Wang W; Eser PO; Assimes TL; He J; Chen G · Clinical nutrition (Edinburgh, Scotland) · 2025
    Cross-sectional study68,947 participantsAnti-Aging
  63. Zinc, metallothioneins, longevity: effect of zinc supplementation on antioxidant response: a Zincage study.
    Mocchegiani E; Zincage Consortium · Rejuvenation research · 2008
    Narrative reviewAnti-Aging
  64. Investigating the effect of zinc supplementation on probability of relapse and mental health in patients with opioid use disorder undergoing methadone maintenance treatment.
    Amini Z; HeidariFarsani E · Substance abuse treatment, prevention, and policy · 2023
    Randomized trial68 participantsStress Relief
  65. A systematic review of the association between zinc and anxiety.
    Azargoonjahromi A · Nutrition reviews · 2024
    Systematic review9 studies pooledStress Relief
  66. Zinc acutely and temporarily inhibits adrenal cortisol secretion in humans. A preliminary report.
    Brandão-Neto J; de Mendonça BB; Shuhama T; Marchini JS; Pimenta WP; Tornero MT · Biological trace element research · 1991
    Clinical trial27 participantsStress Relief
  67. Low Zinc, Copper, and Manganese Intake is Associated with Depression and Anxiety Symptoms in the Japanese Working Population: Findings from the Eating Habit and Well-Being Study.
    Nakamura M; Miura A; Nagahata T; Shibata Y; Okada E; Ojima T · Nutrients · 2019
    Cross-sectional study2,089 participantsStress Relief
  68. Mediation effects of thyroid hormones in the associations between essential metal elements and anxiety or depression symptoms in the elderly.
    Li J; Wang W; Peng Y; Qin N; Li J; Wei Y; Wang B; Zeng H; Li H; Cheng L · Biometals : an international journal on the role of metal ions in biology, biochemistry, and medicine · 2026
    Observational study416 participantsStress Relief
  69. Zinc decreases C-reactive protein, lipid peroxidation, and inflammatory cytokines in elderly subjects: a potential implication of zinc as an atheroprotective agent.
    Bao B; Prasad AS; Beck FW; Fitzgerald JT; Snell D; Bao GW; Singh T; Cardozo LJ · The American journal of clinical nutrition · 2010
    Randomized trial40 participantsAnti-Inflammatory Support
  70. Zinc Supplementation in Individuals with Prediabetes and type 2 Diabetes: a GRADE-Assessed Systematic Review and Dose-Response Meta-analysis.
    Nazari M; Nikbaf-Shandiz M; Pashayee-Khamene F; Bagheri R; Goudarzi K; Hosseinnia NV; Dolatshahi S; Omran HS; Amirani N; Ashtary-Larky D; Asbaghi O; Ghanavati M · Biological trace element research · 2024
    Meta-analysis23 studies pooledAnti-Inflammatory Support
  71. The Effects of Zinc Supplementation on C-Reactive Protein and Inflammatory Cytokines: A Meta-Analysis and Systematical Review.
    Ceylan MN; Akdas S; Yazihan N · Journal of interferon & cytokine research : the official journal of the International Society for Interferon and Cytokine Research · 2022
    Meta-analysis73 studies pooledAnti-Inflammatory Support
  72. The Effects of Zinc Sulfate Supplementation on Serum Copeptin, C-Reactive Protein and Metabolic Markers in Zinc-Deficient Diabetic Patients on Hemodialysis: A Randomized, Double-Blind, Placebo-Controlled Trial.
    Hosseini R; Montazerifar F; Shahraki E; Karajibani M; Mokhtari AM; Dashipour AR; Ferns GA; Jalali M · Biological trace element research · 2021
    Randomized trial46 participantsAnti-Inflammatory Support
  73. Zinc supplementation and cardiovascular disease risk factors: A GRADE-assessed systematic review and dose-response meta-analysis.
    Nazari M; Ashtary-Larky D; Nikbaf-Shandiz M; Goudarzi K; Bagheri R; Dolatshahi S; Omran HS; Amirani N; Ghanavati M; Asbaghi O · Journal of trace elements in medicine and biology : organ of the Society for Minerals and Trace Elements (GMS) · 2023
    Meta-analysis75 studies pooledAnti-Inflammatory Support
  74. A preliminary report: effects of zinc and micronutrient repletion on growth and neuropsychological function of urban Chinese children.
    Penland JG; Sandstead HH; Alcock NW; Dayal HH; Chen XC; Li JS; Zhao F; Yang JJ · Journal of the American College of Nutrition · 1997
    Randomized trial372 participantsBrain HealthCognitive Support
  75. Association between zinc deficiency and cognitive decline in community-dwelling older adults.
    Marchetti MF; Silva GMD; Freiria CN; Borim FSA; Brito TRP; Milanski M; Corona LP · Ciencia & saude coletiva · 2022
    Cross-sectional study591 participantsBrain Health
  76. Zinc status, psychological and nutritional assessment in old people recruited in five European countries: Zincage study.
    Marcellini F; Giuli C; Papa R; Gagliardi C; Dedoussis G; Herbein G; Fulop T; Monti D; Rink L; Jajte J; Mocchegiani E · Biogerontology · 2007
    Cross-sectional study853 participantsBrain Health
  77. Zinc alleviates stroke development through autophagy-mediated modulation of immune microenvironment.
    Qiu Z; Liu X; Li J; Yin H; Luo J; Lin Z; Rexiati M; Abulaiti A; Yasen A; Xing L; Aili D; Meng B; Li X; You Z; He J; Huang C; Qian Z; Chen J · Frontiers in immunology · 2025
    OtherBrain Health
  78. Effects of zinc supplementation on parent and teacher behaviour rating scores in low socioeconomic level Turkish primary school children.
    Uçkardeş Y; Ozmert EN; Unal F; Yurdakök K · Acta paediatrica (Oslo, Norway : 1992) · 2009
    Randomized trial226 participantsCognitive SupportMental Focus
  79. L-shaped association between dietary zinc intake and cognitive decline in Chinese older people.
    Meng Q; Liu M; Zu C; Su X; Wei Y; Gan X; Zhang Y; He P; Zhou C; Ye Z; Liu C; Qin X · Age and ageing · 2024
    Cohort study3,106 participantsCognitive Support
  80. The efficacy of zinc augmentation in children with attention deficit hyperactivity disorder under treatment with methylphenidate: A randomized controlled trial.
    Noorazar SG; Malek A; Aghaei SM; Yasamineh N; Kalejahi P · Asian journal of psychiatry · 2021
    Randomized trial60 participantsMental FocusCognitive Support
  81. Association between composite dietary antioxidant index and handgrip strength in American adults: Data from National Health and Nutrition Examination Survey (NHANES, 2011-2014).
    Wu D; Wang H; Wang W; Qing C; Zhang W; Gao X; Shi Y; Li Y; Zheng Z · Frontiers in nutrition · 2024
    Cross-sectional study6,019 participantsFitnessMuscle Gain
  82. Serum essential elements and muscle health in Chinese adults: a community-based study.
    Ye H; Wang D; Liu S; Yao N; Gui Z; Huang Z; Zeng Y; Liu L; Wan H; Shen J · Nutrition & metabolism · 2025
    Cross-sectional study5,389 participantsMuscle GainFitness
  83. [Survey of the dietary status and physical activity level and fitness of college freshmen in Chengdu].
    Han H; Lv X; Wang D · Wei sheng yan jiu = Journal of hygiene research · 2010
    Cross-sectional study1,200 participantsFitness
  84. A comprehensive review of the physiology and evidence base to guide the use of ergogenic and medical supplements for enhanced cycling performance.
    Rowland A; Edwards S; Prieto-Bellver G; Menz B; Rowland A; Cornelisse E; Karapetis CS; Wallen MP; Hopkins AM · Journal of the International Society of Sports Nutrition · 2026
    Narrative reviewFitness
  85. Minerals and Sarcopenia in Older Adults: An Updated Systematic Review.
    van Dronkelaar C; Fultinga M; Hummel M; Kruizenga H; Weijs PJM; Tieland M · Journal of the American Medical Directors Association · 2023
    Systematic review45 studies pooledFitness
  86. The influence of zinc and iron intake on osteoarthritis patients' subchondral sclerosis progression: A prospective observational study using data from the osteoarthritis Initiative.
    Zheng Z; Luo H; Sun C; Xue Q · Heliyon · 2023
    Cohort study474 participantsJoint Health
  87. Oral zinc sulphate in rheumatoid arthritis.
    Simkin PA · Lancet (London, England) · 1976
    Randomized trial24 participantsJoint Health
  88. Psoriatic arthritis treated with oral zinc sulphate.
    Clemmensen OJ; Siggaard-Andersen J; Worm AM; Stahl D; Frost F; Bloch I · The British journal of dermatology · 1981
    Randomized trial24 participantsJoint Health
  89. Dietary antioxidants and comorbidity of cardiovascular disease and osteoarthritis: A machine learning analysis with SHAP interpretation.
    Sheng G; Liu Y; Dou X; Zhang Y; Zhang J; Zhang D · Medicine · 2026
    Cross-sectional study7,682 participantsJoint Health
  90. The Daily Intake Levels of Copper, Selenium, and Zinc Are Associated with Osteoarthritis but Not with Rheumatoid Arthritis in a Cross-sectional Study.
    Yang WM; Lv JF; Wang YY; Xu YM; Lin J; Liu J; Chen JJ; Wang XZ · Biological trace element research · 2023
    Cross-sectional study4,200 participantsJoint Health
  91. The Role of Iron and Zinc in the Treatment of ADHD among Children and Adolescents: A Systematic Review of Randomized Clinical Trials.
    Granero R; Pardo-Garrido A; Carpio-Toro IL; Ramírez-Coronel AA; Martínez-Suárez PC; Reivan-Ortiz GG · Nutrients · 2021
    Systematic review9 studies pooledMental Focus
  92. Does zinc moderate essential fatty acid and amphetamine treatment of attention-deficit/hyperactivity disorder?
    Arnold LE; Pinkham SM; Votolato N · Journal of child and adolescent psychopharmacology · 2001
    Randomized trialMental Focus
  93. The effect of zinc supplementation in children with attention deficit hyperactivity disorder: A systematic review and dose-response meta‑analysis of randomized clinical trials.
    Talebi S; Miraghajani M; Ghavami A; Mohammadi H · Critical reviews in food science and nutrition · 2022
    Meta-analysis489 participants6 studies pooledMental Focus
  94. Zinc in depression: From development to treatment: A comparative/ dose response meta-analysis of observational studies and randomized controlled trials.
    Yosaee S; Clark CCT; Keshtkaran Z; Ashourpour M; Keshani P; Soltani S · General hospital psychiatry · 2022
    Meta-analysisMood Support
  95. Dietary zinc and iron intake and risk of depression: A meta-analysis.
    Li Z; Li B; Song X; Zhang D · Psychiatry research · 2017
    Meta-analysis9 studies pooledMood Support
  96. Zinc sulphate: A reasonable choice for depression management in patients with multiple sclerosis: A randomized, double-blind, placebo-controlled clinical trial.
    Salari S; Khomand P; Arasteh M; Yousefzamani B; Hassanzadeh K · Pharmacological reports : PR · 2016
    Randomized trial43 participantsMood Support
  97. Comparative efficacy and tolerability of nutraceuticals for depressive disorder: A systematic review and network meta-analysis.
    Cheng YC; Huang WL; Chen WY; Huang YC; Kuo PH; Tu YK · Psychological medicine · 2025
    Meta-analysis17,437 participants192 studies pooledMood Support
  98. Clinician guidelines for the treatment of psychiatric disorders with nutraceuticals and phytoceuticals: The World Federation of Societies of Biological Psychiatry (WFSBP) and Canadian Network for Mood and Anxiety Treatments (CANMAT) Taskforce.
    Sarris J; Ravindran A; Yatham LN; Marx W; Rucklidge JJ; McIntyre RS; Akhondzadeh S; Benedetti F; Caneo C; Cramer H; Cribb L; de Manincor M; Dean O; Deslandes AC; Freeman MP; Gangadhar B; Harvey BH; Kasper S; Lake J; Lopresti A; Lu L; Metri NJ; Mischoulon D; Ng CH; Nishi D; Rahimi R; Seedat S; Sinclair J; Su KP; Zhang ZJ; Berk M · The world journal of biological psychiatry : the official journal of the World Federation of Societies of Biological Psychiatry · 2022
    Guideline / consensusMood Support
  99. Bioelectrical impedance vector analysis for evaluating zinc supplementation in prepubertal and healthy children.
    Dantas MM; Rocha ÉD; Brito NJ; Alves CX; França MC; das Graças Almeida M; Brandão-Neto J · Food & nutrition research · 2015
    Randomized trial60 participantsMuscle Gain
  100. Dietary Zinc Intakes Are Associated With Skeletal Muscle Mass and Strength in Children and Adolescents: Zinc and Muscle in Children.
    Kong FS; Ma CM · Clinical pediatrics · 2024
    Cross-sectional studyMuscle Gain
  101. Association of Serum Concentrations of Copper, Selenium, and Zinc with Grip Strength Based on NHANES 2013-2014.
    Chen K; Zhou J; Liu N; Meng X · Biological trace element research · 2024
    Cross-sectional studyMuscle Gain
  102. Vitamins and minerals: their role in nail health and disease.
    Scheinfeld N; Dahdah MJ; Scher R · Journal of drugs in dermatology : JDD · 2007
    Narrative reviewNail Health
  103. The effects of iron and/or zinc supplementation on maternal reports of sleep in infants from Nepal and Zanzibar.
    Kordas K; Siegel EH; Olney DK; Katz J; Tielsch JM; Kariger PK; Khalfan SS; LeClerq SC; Khatry SK; Stoltzfus RJ · Journal of developmental and behavioral pediatrics : JDBP · 2009
    Randomized trial1,444 participantsSleep Support
  104. Effect of zinc supplementation on quality of life and sleep quality in young women with premenstrual syndrome: a randomized, double-blind, placebo-controlled trial.
    Jafari F; Tarrahi MJ; Farhang A; Amani R · Archives of gynecology and obstetrics · 2020
    Randomized trial60 participantsSleep Support
  105. Skin-protective effects of a zinc oxide-functionalized textile and its relevance for atopic dermatitis.
    Wiegand C; Hipler UC; Boldt S; Strehle J; Wollina U · Clinical, cosmetic and investigational dermatology · 2013
    Non-randomized trialSleep Support
  106. Associations of serum zinc, copper, and selenium with sleep disorders in the American adults: Data from NHANES 2011-2016.
    Deng MG; Liu F; Liang Y; Chen Y; Nie JQ; Chai C; Wang K · Journal of affective disorders · 2023
    Cross-sectional study3,660 participantsSleep Support
  107. Magnesium and Zinc Are Associated with Sleep Quality in Saudi Adults: Evidence from a Cross-Sectional Study.
    Al-Musharaf S; Aldhwayan MM; Mazi TA; Abujabir O; Alfawaz W; Aljuraiban GS · Nutrients · 2026
    Cross-sectional study1,041 participantsSleep Support
  108. Efficacy of combined iron and zinc supplementation on micronutrient status and growth in Vietnamese infants.
    Berger J; Ninh NX; Khan NC; Nhien NV; Lien DK; Trung NQ; Khoi HH · European journal of clinical nutrition · 2006
    Randomized trial915 participantsWeight Gain
  109. Effect of enteral zinc supplementation on growth and neurodevelopment of preterm infants: a systematic review and meta-analysis.
    Alshaikh B; Abo Zeed M; Yusuf K; Guin M; Fenton T · Journal of perinatology : official journal of the California Perinatal Association · 2022
    Meta-analysis742 participants8 studies pooledWeight Gain
  110. The effect of zinc supplementation on pregnancy outcome.
    Goldenberg RL; Tamura T; Neggers Y; Copper RL; Johnston KE; DuBard MB; Hauth JC · JAMA · 1995
    Randomized trial580 participantsWeight Gain
  111. Zinc supplements in breastfed infants.
    Walravens PA; Chakar A; Mokni R; Denise J; Lemonnier D · Lancet (London, England) · 1992
    Randomized trial57 participantsWeight Gain