DHA

Why It Matters

DHA, or docosahexaenoic acid, is an omega-3 fatty acid that is essential for brain development and function. It is a key component of cell membranes and is found in high amounts in the brain and retina. (source, source)

Higher red blood cell DHA levels are associated with lower brain neuroinflammation and improved cognitive performance in healthy young men. (source)

Low DHA: Insufficient Omega-3 Status

Low serum DHA levels stem from physiological factors like inadequate conversion of precursor fatty acids in the liver and insufficient intake of DHA-rich foods. A diet lacking in sources of omega-3 fatty acids, such as fatty fish like salmon and mackerel, contributes to low DHA levels. (source, source)

Potential Performance Impact:

• Reduced DHA impairs neural membrane function, slowing cognitive processing and reaction time
• Insufficient DHA compromises cell membrane integrity, reducing muscle recovery capacity
• Low DHA status limits anti-inflammatory signaling, prolonging recovery after training
• Suboptimal brain DHA concentrations affect focus, decision-making, and motor coordination

Optimization

Prioritize fatty fish: Consumption of omega-3 fatty acids increases omega-3 levels. Fatty fish are a rich source of omega-3 fatty acids. (source, source)

Protocol: Eat at least two servings of fatty fish a week. One serving examples: Salmon (3 oz), Herring (3 oz), Bluefin Tuna (3 oz), Anchovies (3 oz), Mackerel (3 oz).

Avoid alcohol: Alcohol decreases omega-3 fatty acids. (source) Ethanol inhibits metabolic pathways that convert alpha-linolenic acid into omega-3 fatty acids. (source) Limiting alcohol consumption will increase omega-3 fatty acid levels in the body.

Protocol: Monitor alcohol intake. Try to limit consumption to one or two drinks daily, with the goal of less than three per week.

Eat fatty fish at restaurants: Consumption of omega-3 fatty acids increases omega-3 levels. Fatty fish are a rich source of omega-3 fatty acids. (source, source)

Protocol: When dining out, choose fatty fish over other sources of protein.

Supplement with fish oil: Fish oil supplementation has been shown to increase serum DHA. (source) Fish oil is a rich source of omega-3 fatty acids. (source, source)

Protocol: Consume at least 3 g of fish oil supplements daily.

High DHA: Excess Omega-3 Accumulation

High serum DHA levels are attributed to physiological factors related to the metabolism of omega-3 fatty acids, particularly in organs like the liver and brain where DHA is synthesized and utilized. Nutritionally, consuming a diet rich in sources of DHA, such as fatty fish like salmon and sardines, along with omega-3 supplements, contributes to elevated serum DHA levels. (source, source)

Potential Performance Impact:

• Excess omega-3 accumulation impairs blood clotting dynamics, increasing bleeding risk during contact activities
• Disproportionately high DHA suppresses necessary acute inflammatory responses needed for tissue repair
• Excessive omega-3 status alters immune function, reducing pathogen defense during heavy training
• Surplus DHA beyond optimal levels provides diminishing returns while displacing other essential fatty acids

Optimization

Limit foods high in omega-3 fatty acids: Ingestion of omega-3 fatty acids has been shown to increase DHA. (source) Limiting intake of foods high in omega-3 fatty acids will decrease DHA.

Protocol: Monitor and limit excess consumption of foods high in omega-3 fatty acids, like fatty fish, to ensure optimal levels.

Monitor omega-3 fatty acids: Supplementing with omega-3 fatty acids raises DHA. (source) Limiting the intake of omega-3 fatty acids will decrease DHA.

Protocol: Monitor excess omega-3 fatty acid intake and concentrations in supplements.