Does resveratrol extend lifespan in humans?

Answered November 2, 20269 sources

EvidenceDPreliminaryVery uncertain: animal or cell studies, or studies in people with several serious weaknesses.

We don't know yet. No study has shown that resveratrol helps people live longer, and the evidence for longer life comes from animals, with mixed results.

Who it's for
No group has a clear lifespan benefit; older adults are the main group studied.
What to expect
No proven effect on how long people live.
Watch out for
High doses raised LDL cholesterol in one trial.
Resveratrol levels in urine did not predict who died

A dot with a line shows the range for risk of death in older adults with the lowest resveratrol levels compared with the highest.

Resveratrol levels in urine did not predict who died
ResultEstimate95% rangeReading
Lowest vs. highest resveratrol level0.80.54 to 1.17No clear difference

Source 2 JAMA Intern Med, 2014

What the studies show

  • A study that followed 783 adults aged 65 and older for 9 years measured resveratrol from diet, using urine tests. Levels were not linked to the risk of death, heart disease, cancer or inflammation. The results could fit a benefit or a harm2. Such figures compare groups, so one person's outcome depends on their starting risk.
  • A review that pooled 19 animal papers across six species found resveratrol extended life. The effect was strongest in yeast and nematode worms and less reliable in higher species. Many results varied for unexplained reasons. The authors questioned marketing it as a life-extending supplement for humans8.
  • A review of 10 trials in older adults found possible benefits for muscle function with exercise and for thinking in overweight people. It found no advantage over a dummy pill (placebo A dummy treatment that looks like the real one, so people can't tell which they got.) in people with diabetes or artery disease in the legs. None of these trials measured lifespan1.
  • A crossover trial of 30 older adults with impaired blood sugar control gave 2 to 3 g a day for 6 weeks. Blood vessel function and muscle mitochondria (the cell's energy units) improved. Blood sugar control did not. The authors said the meaning for human lifespan is uncertain3.
  • A 2-year pilot trial of 120 healthy adults around age 72 tested resveratrol plus a supplement called TA-65. The resveratrol group stopped at month 5 because LDL cholesterol rose. The treatments did not change a blood-based marker of biological age4.
  • Mouse work showed resveratrol improved running endurance and protected against diet-induced obesity. This does not show a lifespan effect in people7.

Key studies

StudyWhoWhat it found
Study following people, 20142783 adults 65+, 9 yearsDiet resveratrol levels not linked to death risk
Review of animal studies, 2012819 papers, six speciesLife extension mostly in yeast and worms; mixed elsewhere
Review of 10 trials, 20241Older adultsSome function benefits; no lifespan data
Trial, 20264120 healthy adults, about 72Cholesterol rose; no change in aging marker
Trial, 2017330 older adultsVessel function improved; blood sugar unchanged

Safety

Trials of resveratrol generally reported no serious side effects1,6. High doses raised some heart disease risk markers1. In one trial, LDL cholesterol rose enough to stop the resveratrol group early, and the authors advised avoiding high doses4. Absorption by the body is poor6.

What we don't know

  • Whether resveratrol changes how long people live. No trial has tested this.
  • The best dose, the long-term effects and interactions with medicines1.

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Written by AI from the studies listed, without review by a clinician, and graded with the GRADE method. It can be wrong, so check the studies it cites. Education, not medical advice.