Grape skins and seeds are edible, but you should pay attention to washing them before eating.

Grape skins are rich in resveratrol and anthocyanins. Resveratrol can protect cardiovascular and cerebrovascular health and prevent thrombosis. The nutrition of grape seed is not bad, and it is rich in polyphenols such as anthocyanin and catechin, which has certain antioxidant and anti-aging effects.

Extended data

On the nutritional value of grapes

Nutritional components of grapes Grapes not only taste delicious, but also have high nutritional value. The sugar content of grapes in mature berries is as high as 10%-30%, mainly glucose. A variety of fruit acids in grapes help digestion. Eating more grapes properly can strengthen the stomach. Grape contains minerals such as calcium, potassium, phosphorus and iron, and vitamins B 1, B2, B6, C and P, etc. They also contain a variety of amino acids needed by the human body. Eating grapes regularly is of great benefit to neurasthenia and fatigue.

It is found that grapes can prevent thrombosis better than aspirin, and can lower the level of human serum cholesterol and reduce the aggregation of platelets, which has a certain effect on preventing cardiovascular and cerebrovascular diseases. Eating a proper amount of fresh grapes every day will not only reduce the risk of cardiovascular disease, but also be especially beneficial to the health of patients with ischemic heart disease and atherosclerotic heart disease. Flavonoids in fresh grapes can "clean" the blood and prevent the formation of cholesterol plaques. The darker the color of grapes, the more flavonoids they contain, but if grape skins and grape seeds are eaten together, the protective effect on the heart is better.

References:

Baidu encyclopedia: grapes