A beginner’s guide

Longevity for Beginners: Supplements, Explained Simply

A friendly beginner’s guide to longevity supplements: what they are, what they may do, how strong the evidence is, how to take them and what to buy.

  1. What it isPlain-English basics
  2. What it may doPossible benefits
  3. Evidence strengthA simple 5-step meter
  4. How to take itDoses used in research
  5. What to buyWhere to buy, with what to look for
Full A–Z

Creatine for Beginners

Creatine for beginners: what research shows for muscle, strength and memory in older adults, typical study doses, side effects and who should check…

Grade B · Good

Magnesium Supplements

Magnesium supplements for beginners: what research shows for blood pressure, blood sugar, sleep and cramps, typical amounts and side effects.

Grade B · Good

Vitamin D Benefits

Vitamin D benefits for beginners: what large trials show for bones, falls and colds, typical doses in mcg and IU, and who should ask a doctor first.

Grade C · Mixed

Collagen for Beginners

Collagen for beginners: what reviews show for skin, knee joints and muscle, why study funding matters, how people take it and who should check first.

Grade C · Mixed

Vitamin C Benefits

Vitamin C benefits: what human trials show, amounts studied, side effects and who should check first. Plain-English evidence grade.

Grade C · Mixed

Berberine Benefits

Berberine benefits: what human trials show, amounts studied, side effects and who should check first. Plain-English evidence grade.

Grade C · Mixed

Probiotics for Beginners

Probiotics for beginners: what human trials show, amounts studied, side effects and who should check first. Plain-English evidence grade.

Grade B · Good

Vitamin B12 Benefits

Vitamin B12 benefits: what human trials show, amounts studied, side effects and who should check first. Plain-English evidence grade.

Grade C · Mixed

Best-of lists

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Side-by-side comparisons

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