Docosahexaenoic acid (DHA) is a long-chain polyunsaturated omega-3 fatty acid, serving as a critical structural component of cell membranes. It is particularly abundant in the brain, retina, and testes, and is essential for the proper development and functioning of the brain and eyes throughout all stages of life, from infancy to old age. As a prominent omega-3 fatty acid, DHA is renowned for its potent anti-inflammatory properties, which can help mitigate chronic inflammation, a factor in numerous health conditions. It also plays a significant role in supporting cardiovascular health by contributing to healthy blood pressure and triglyceride levels, and by improving overall endothelial function. DHA is primarily obtained through dietary sources such as fatty fish, or from supplements containing fish oil or algal oil, making it accessible for various dietary preferences. While the body can synthesize some DHA from alpha-linolenic acid (ALA), this conversion is often inefficient, underscoring the importance of direct intake for maintaining optimal levels.