Reading lifespan headlines carefully
Longevity & Healthspan
No supplement has been shown to extend human lifespan. This hub explains how to interpret the longevity research honestly and where the credible signals are.
What the evidence says
- Animal lifespan results have repeatedly failed to translate to humans; treat them as hypotheses.
- Epigenetic 'biological age' clocks are research tools, not validated health outcomes.
- Strength training, sleep, blood-pressure control and social connection have far stronger healthspan evidence than any pill.
Supplements in this topic
Omega-3
Omega-3 fish oil
Moderate evidence
Reduces triglycerides and may lower cardiovascular risk in high-risk groups. Benefits for cognition and mood are promising but less certain.
Verdict: Heart and triglyceride benefits are well-supported.
620 studies reviewed
High doses can increase bleeding risk
Vitamins
Vitamin D
Moderate evidence
Essential for bone health and immune function. Supplementation helps people who are deficient, but routine mega-dosing shows mixed benefits for healthy adults.
Verdict: Worth taking if deficient; test levels first.
850 studies reviewed
Fat-soluble toxicity risk at very high doses
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