Goal-Based Guide

Best Supplements for Longevity

Only a handful of supplements hold up for longevity: omega-3, creatine, probiotics, magnesium and vitamin D. Beyond that short list, the sources disagree. Here's what each one does.

Longevity supplements are about healthspan, the years you live in good health. Across the researchers we track, including 100-plus-pill regimens, only a short list holds up. Here are the supplements with the most support, and where the evidence stops. (We don't sell any of them.)

Verdicts are worked out from what researchers say in public videos. Not medical advice. Always consult your healthcare provider before starting, stopping, or changing any supplement.

Top Supplements for Longevity

Ranked by the verdict on whether each supplement works, worked out from every counted mention. Each dot is one source: a researcher or a study.

positive partly neutral negative Each researcher and each study counts once per claim, however often they come up.

  1. Creatine

    Strong consensus for

    Creatine is worth taking.

    11 sources: 8 positive, 2 partly, 1 neutral

    11 sources: 8 positive, 2 partly, 1 neutral

  2. Magnesium

    Strong consensus for

    Magnesium supplements are worth taking.

    8 sources: 6 positive, 2 partly

    8 sources: 6 positive, 2 partly

  3. Probiotics & Gut Health

    Leaning for

    Probiotic supplements or fermented foods are worth taking.

    +14 30 sources: 15 positive, 14 partly, 1 negative

    30 sources: 15 positive, 14 partly, 1 negative

  4. Omega-3

    Leaning for

    Omega-3 supplements are worth taking.

    +1 17 sources: 7 positive, 10 partly

    17 sources: 7 positive, 10 partly

  5. Vitamin D

    Leaning for

    Vitamin D supplements are worth taking.

    12 sources: 6 positive, 6 partly

    12 sources: 6 positive, 6 partly

Precis is not affiliated with or endorsed by YouTube or by any researcher, show or publisher we quote. We take no sponsorship, ad or affiliate money, and every verdict is our own review of what was said. How we stay independent

The Longevity Foundation Stack

The supplements with the most support for healthspan:

  • Omega-3 - backed across multiple longevity pathways.
  • Creatine - taken for muscle preservation and brain health.
  • Vitamin D3 + K2 - target 50-80 ng/mL. Deficiency linked to accelerated aging.
  • Magnesium - nearly half of Americans are deficient.

Common Mistakes

  1. Chasing exotic longevity compounds (NMN, rapamycin, metformin) before covering the basics. Their human evidence is thin.
  2. Spending $200+/month on supplements while neglecting exercise, the single most powerful longevity intervention.
  3. Not testing blood levels for the supplements that matter most: vitamin D, omega-3 index, and magnesium RBC.
  4. Following social media supplement stacks without understanding your individual baseline and deficiencies.

Know what to take. Now learn exactly how.

This page shows you which supplements researchers agree on for longevity. A free account opens the dose, form and timing for each supplement, with the interactions to watch. Pro adds chat answers drawn from 3,700+ hours of recorded interviews with 380 researchers and doctors, plus 48,500+ research studies, each one cited.

Cancel anytime

Other Goal Guides