Spermidine, Resveratrol and CoQ10 in Longevity Research

Three compounds, three different stories

Spermidine, resveratrol and coenzyme Q10 (CoQ10) are often marketed together as "longevity" supplements. They are different compounds with different research histories. This page is education only: it gives no amounts and does not advise starting or stopping anything. Nutrient and ingredient profiles are on the Supplements pages, linked below.

Evidence labels: established, promising but limited, mixed, insufficient evidence, preclinical (cells or animals only), no good evidence of benefit, marketing claim. A benefit in mice or in a lab dish is never treated here as a benefit in people.

Spermidine

Spermidine is a natural polyamine. Reviews of model organisms list it among compounds that increased longevity and stress resistance in yeast, worms, flies and mice. [1]

• Animals. A 2016 study reported that spermidine in the diet extended the lifespan of mice and protected the heart, and that this protection depended on an autophagy protein (autophagy is the cell's self-cleaning process; see senescence, senolytics and autophagy). [2] Label: preclinical.
• Food-intake studies. In a community-based cohort of 829 adults aged 45 to 84, people in the highest third of dietary spermidine intake had lower mortality over about 20 years, even after adjusting for lifestyle factors. [3] This is an observational link; people who eat spermidine-rich diets may differ in many other ways. Label: promising but limited.
• Supplement trial. In the 12-month SmartAge trial of 100 adults aged 60 to 90 with subjective cognitive decline, a wheat germ extract rich in spermidine did not change the main memory measure compared with placebo. Adverse events were balanced between groups. [4] Label: no good evidence of benefit for that outcome; the authors suggested exploratory signals need confirming.

Resveratrol (longevity)

Resveratrol is a plant polyphenol. The Supplements section covers it as an ingredient: polyphenols, quercetin and resveratrol.

• Animals and lab organisms. Resveratrol is reported to increase longevity in model organisms including yeast, worms, flies and mice, and it has been in testing with the NIA Interventions Testing Program. [1] Label: preclinical. See healthspan and lifespan for why mouse results do not carry over automatically.
• People. A 2024 systematic review of 10 randomized trials in older adults found resveratrol combined with exercise improved exercise adaptation and muscle function in healthy older adults, was no better than placebo in older adults with diabetes or peripheral artery disease, and increased some cardiovascular risk biomarkers at high doses in overweight people. No study reported significant adverse events, but the review said long-term effects, best amounts and medicine interactions still need proper trials. [5]
• Label: mixed for outcomes in older adults; insufficient evidence that it extends human lifespan.

CoQ10 (longevity)

CoQ10 is naturally present in the body, with the highest levels in the heart, liver, kidneys and pancreas, and is sold in the US as a dietary supplement. [6] The Supplements profile covers it in more detail: coenzyme Q10.

• Safety and interactions. The NIH's National Center for Complementary and Integrative Health reports no serious side effects, with mild effects such as insomnia or digestive upset possible. It says CoQ10 may interact with the blood thinner warfarin and with insulin. [6]
• General evidence. NCCIH says studies on preventing heart disease were inconclusive. [6] A Cochrane review found only six small trials (218 people in total), none reporting deaths or heart events. [7]
• The Swedish selenium-CoQ10 trial. In a 5-year trial of 443 Swedes aged 70 to 88, a combined selenium and CoQ10 supplement was linked to lower cardiovascular mortality than placebo (5.9% vs 12.6%). [8] The population had low selenium levels at the start, and CoQ10 was given with selenium, so the effect of CoQ10 alone cannot be separated. [9] Label: promising but limited; one trial that needs independent repeating.
• Aging in general. Proper evidence not found that CoQ10 slows aging or extends lifespan in people (we checked NCCIH and Cochrane reviews and PubMed trial reports).

Quick comparison

Safety and checking first

In the US, supplement makers rather than the FDA are responsible for evaluating safety and labeling before sale. [10] See how supplements are regulated. Ask a clinician before using any of these if you take warfarin, insulin or other prescription medicines, are pregnant, or have a long-term condition; see medication interactions. For a framework on claims, see antioxidants explained.