DHA, or docosahexaenoic acid, is an omega-3 fatty acid that is crucial for brain health and development. It is primarily found in fatty fish like salmon, mackerel, and sardines, as well as in algae. DHA plays a vital role in the structure of brain cell membranes and is important for cognitive function and visual development. In addition to its benefits for brain health, DHA is also linked to heart health. It can help reduce inflammation and lower triglyceride levels in the blood. Many people choose to supplement their diets with fish oil or algal oil to ensure they receive adequate amounts of DHA.