What's Rhonda Patrick's guidance on omega-3 supplementation?

Rhonda Patrick’s guidance is to use omega-3 supplementation to help bring the omega-3 index toward 8%; about 2 grams daily is a practical target, while she personally takes 4 grams daily. 1

• Omega-3 index: People who eat little fish and don’t supplement may have an index around 4–5%. The index measures omega-3s in red blood cells, which turn over in about 120 days, so it reflects longer-term status. 2 3
• Form and timing: Triglyceride-form fish oil is more bioavailable. Ethyl ester forms are also usable, but should be taken with food; triglyceride-form oil can be taken with or without food. 4 5
• Her own and prescription doses: Patrick says she takes 4 grams per day, split between EPA in the morning and DHA in the evening. She notes prescription Vascepa is dosed at 4 grams daily. 6 7
• Product quality: Look for third-party testing of omega-3 concentration, contaminants, and oxidation; Patrick also recommends keeping fish oil refrigerated. 8
• Mood: Omega-3s, particularly EPA, may support mood; Huberman describes research suggesting adequate EPA may help some people reduce antidepressant dosages or avoid medication, while cautioning against changing mental-health treatment without professional guidance. 9