Omega-3s: Where the Evidence Holds and Where It Thinned

Triglyceride lowering is solid. The cardiovascular event story became more complicated after the trials read out.

At gram-level doses, omega-3 fatty acids reliably lower triglycerides in a dose-dependent way. That part of the literature is stable and not seriously contested.

Event-reduction findings are messier. One large trial reported a substantial benefit, another with a different formulation and comparator did not, and the discrepancy may involve the mineral oil placebo as much as the drug.

For most people the food version is the defensible default: two servings of oily fish a week matches the dietary patterns the cohort data describes.

High doses raise bleeding considerations and interact with anticoagulants, so anyone on those drugs should not self-prescribe grams of fish oil.

Editorial note: this article summarises published research for general information. It is not medical advice. Discuss any intervention with a qualified clinician.