Resveratrol is a natural compound sold as a supplement for healthy ageing. This guide looks at what resveratrol is, what people claim it does, and what the research actually shows.
If you’re unsure about whether resveratrol is the ideal supplement for you or don’t know what its purported health benefits are, keep on reading to find out more.
What’s Resveratrol?
Resveratrol is a polyphenol, a type of antioxidant. Antioxidants called polyphenols may help protect the lining of blood vessels in the heart. Resveratrol is found in the skin of red grapes. It is also in red wine, red and purple grape juice, peanuts, blueberries and cranberries.
Study results on resveratrol are mixed, and more research is needed.
Resveratrol and Heart Health:
According to the Mayo Clinic, resveratrol might help prevent damage to blood vessels and prevent blood clots. It may lower low-density lipoprotein (LDL) cholesterol, the “bad” cholesterol. But study results on resveratrol are mixed. Some research shows that resveratrol may make you less likely to get blood clots and swelling and irritation, called inflammation. But other studies have found that resveratrol does not protect against heart disease. More research is needed.
Resveratrol and the Brain:
Resveratrol has been studied in test tubes and in animals for effects on the brain and on ageing. A 2020 review in the International Journal of Molecular Sciences found that although laboratory and animal studies suggested several health benefits, the human studies so far have shown mixed results. There is no proof from human studies that resveratrol supplements protect brain cells or slow Alzheimer’s disease.
Resveratrol and Cancer:
Resveratrol has been studied in test tubes and in animals for its effects on cancer cells. A role for resveratrol in cancer was proposed mainly from test-tube studies, and in animal cancer models the effects were variable: positive, negative, or completely absent. There is no proof from human studies that resveratrol supplements prevent or treat cancer.
Resveratrol and Healthy Ageing:
There is no proof that resveratrol supplements slow ageing or restore lost energy. Keep your expectations realistic: study results on resveratrol are mixed, and more research is needed.
What the Research Really Shows
Most of the research on resveratrol has been done in test tubes and in animals. Human studies so far have shown mixed results, and more clinical trials are needed before resveratrol can be considered for therapeutic or preventive use. According to the Mayo Clinic, study results on resveratrol are mixed. Some research shows that resveratrol may make you less likely to get blood clots and inflammation, which can lower the risk of heart disease. But other studies have found that resveratrol does not protect against heart disease. More research is needed. There is no proof from human studies that resveratrol supplements prevent or treat heart disease, cancer, Alzheimer’s disease, or joint pain. The word “proven” in this post’s title is wrong. The benefits described in this post are possible, not proven.
Resveratrol in Food vs Supplements
Resveratrol is found in food: the skin of red grapes, red wine, red and purple grape juice, peanuts, blueberries and cranberries. It is not yet known whether it is resveratrol or other compounds in grapes or other foods that promote heart health. It is not known how much resveratrol is needed to protect the heart, and the amount in food and red wine can vary widely. Resveratrol supplements also exist, but they might cause side effects, and research suggests that the body can’t absorb most of the resveratrol in supplements. Drinking red wine for resveratrol is not advised. Experts say you should not start drinking alcohol to help your heart, and drinking too much alcohol raises the risk of high blood pressure and some types of cancer.
Possible Side Effects and Interactions
Resveratrol supplements might cause side effects. At high doses of 2 to 5 g a day, they can cause mild diarrhoea and nausea, according to a 2020 review in the International Journal of Molecular Sciences. Resveratrol may interact with blood thinners and other medicines. In a mouse study, it increased the anticoagulant activity of warfarin, which may increase the risk of bleeding. People who take blood thinners should talk to a doctor before taking resveratrol supplements. The FDA is not authorized to approve dietary supplements for safety and effectiveness before they are marketed. In many cases, firms can lawfully introduce dietary supplements to the market without even telling the FDA. The FDA advises people to talk to their doctor, pharmacist, or other healthcare professional before deciding to buy or use a dietary supplement.
Healthy Ageing That Is Proven
Steps that are proven to support healthy ageing are regular physical activity, a healthy diet, enough sleep, and not smoking. The CDC advises adults to get at least 150 minutes of moderate physical activity each week. A diet rich in fruits, vegetables, whole grains, and lean protein is part of healthy eating. The CDC advises adults to get 7 or more hours of sleep each night.
Frequently Asked Questions
What is resveratrol?
Resveratrol is a polyphenol, a type of antioxidant. It is found in the skin of red grapes, red wine, red and purple grape juice, peanuts, blueberries and cranberries.
Are the health benefits of resveratrol proven?
No. Study results on resveratrol are mixed. Most of the research has been done in test tubes and in animals, and the human studies so far have shown mixed results. More clinical trials are needed before resveratrol can be considered for therapeutic or preventive use.
Can resveratrol lower blood pressure or prevent cancer?
There is no proof from human studies that resveratrol supplements lower blood pressure or prevent cancer. Resveratrol might help prevent damage to blood vessels and may lower LDL cholesterol, but other studies have found that it does not protect against heart disease. In animal cancer models, the effects were variable: positive, negative, or completely absent.
What are the side effects of resveratrol supplements?
Resveratrol supplements might cause side effects. At high doses of 2 to 5 g a day, they can cause mild diarrhoea and nausea. Resveratrol may interact with blood thinners and other medicines. People who take blood thinners should talk to a doctor before taking resveratrol supplements.
What steps are proven to support healthy ageing?
Regular physical activity, a healthy diet, enough sleep, and not smoking help people stay healthy as they age. The CDC advises adults to get at least 150 minutes of moderate physical activity each week and 7 or more hours of sleep each night.
Disclaimer: This guide is for general information only. It is not medical advice and it does not replace care from a doctor. Talk to a doctor before taking resveratrol supplements, especially if you are pregnant, breastfeeding, or take medicine.
Last Updated: 6 November 2026