This depends on how you understand it. Prevention only means reducing the probability of illness, but it does not mean that it can be completely prevented. Song Yifu said that resveratrol has therapeutic and preventive effects on many common diseases, some of which can be treated and some can be prevented. It doesn't mean that all diseases can be cured, just like some people will not get cancer if they eat barbecue every day, and some people will get cancer if they eat it only a few times. It is possible, but preventing diseases can reduce your chances of getting sick. But that doesn't mean you won't get sick. Resveratrol really has a good effect on cardiovascular and cerebrovascular diseases and beauty, because the health-preserving function of wine is because it contains resveratrol.