Category

Longevity Supplements

13 evidence-based articles

Supplements are easy to buy and hard to evaluate, because large randomized trials often fail to confirm what observational studies suggested. In VITAL, 25,871 older US adults took vitamin D3 (2,000 IU a day), marine omega-3s (1 g a day), both or placebo for a median of 5.3 years. Vitamin D did not lower the risk of invasive cancer or major cardiovascular events,1 and omega-3s did not lower the incidence of major cardiovascular events or cancer.2

Results for specific outcomes can be more encouraging. In a meta-analysis of trials in 357 older adults doing resistance training, adding creatine increased fat-free mass and chest- and leg-press strength more than training alone.3

The articles below grade each compound by the quality of its human evidence and flag drug interactions and upper intake limits.

Reading path

Read in this order: the essentials first, then the detail, then the reviews that test popular claims.

Start here

  1. The Longevity Supplements Guide: What the Evidence Actually SupportsWhich longevity supplements have solid human evidence, which are promising but unproven, and which are not worth the money.
  2. Supplement Safety: Drug Interactions, Upper Limits, and What to Watch ForCommon supplement-drug interactions, upper intake limits for vitamins and minerals, and the warning signs that a supplement is causing harm.

Go deeper

  1. Vitamin D and Longevity: Separating Genuine Benefit from Wishful ThinkingWhat large vitamin D trials such as VITAL found, who is likely to benefit from supplements, and why higher doses are not always better.
  2. Omega-3 Fatty Acids and Longevity: What Decades of Research Actually ProveWhat decades of omega-3 research show for heart disease, inflammation and mortality, including the large trials, and who benefits most.
  3. Creatine: The Best-Supported Supplement for Muscle StrengthWhat creatine does for muscle, strength and possibly the brain, the doses studied, and the safety record across decades of trials.
  4. Magnesium: The Deficient Mineral at the Center of 300+ Enzymatic ReactionsWhat magnesium does in the body, why low intake is common, how to test status, and what the evidence shows for sleep, blood pressure and muscle.

Evidence checks

  1. NMN vs. NR: The NAD+ Precursor Battle — What the Latest Human Trials Actually ShowHow NMN and NR compare as NAD+ precursors, what human trials have measured so far, and what remains unproven about either.
  2. Supplement Brand Testing &Purity GuideThe supplement industry is unregulated. This guide explains which third-party testing certifications matter, which brands have passed independent testing, and how to evaluate supplement purity and potency for your longevity stack.

Sources

  1. 1Manson JE, et al. "Vitamin D Supplements and Prevention of Cancer and Cardiovascular Disease." N Engl J Med. 2019;380(1):33-44. PubMed · DOI
  2. 2Manson JE, et al. "Marine n-3 Fatty Acids and Prevention of Cardiovascular Disease and Cancer." N Engl J Med. 2019;380(1):23-32. PubMed · DOI
  3. 3Devries MC, Phillips SM. "Creatine supplementation during resistance training in older adults-a meta-analysis." Med Sci Sports Exerc. 2014;46(6):1194-203. PubMed · DOI
Start Here
NMN vs NR: The NAD+ Precursor Battle
What the latest human trials actually show about the two most popular NAD+ precursors.
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NMN vs. NR: The NAD+ Precursor Battle — What the Latest Human Trials Actually Sh
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The Longevity Nutrients Glossary: Key Micronutrients, What They Do and How Much You Needs, and Opt
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Supplement Safety: Drug Interactions, Upper Limits, and What to Watch For
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Omega-3 Fatty Acids and Longevity: What Decades of Research Actually Prove
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Vitamin D and Longevity: Separating Genuine Benefit from Wishful Thinking
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Metformin for Longevity: The TAME Trial and What We Are Actually Testing
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The Longevity Supplements Guide: What the Evidence Actually Supports
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Berberine: The Supplement Being Called Nature's Metformin
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Magnesium: The Deficient Mineral at the Center of 300+ Enzymatic Reactions
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Longevity Pharmacology: The Complete Drug Review
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CoQ10 and Ubiquinol: Who Actually Needs It and Why
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Creatine: The Best-Supported Supplement for Muscle Strength
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Zinc and Immune Aging: Why This Mineral Is Critical After 60
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Supplement Brand Testing & Purity Guide: Which Longevity Supplements Actually Pass Thir...
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