1、 Protect the heart

Grape skin contains flavonoids, which can increase the high-density protein and fat in the blood after being ingested, so as to reduce the production of cholesterol, prevent arteriosclerosis and protect the heart. Note that the darker the skin, the higher the content of such substances.

2、 Delay aging

It contains anthocyanins, which belong to a skin beautifying ingredient, which can play an antioxidant role and promote the skin to be free from free radicals, so as to maintain its own elasticity. In addition, there is another substance, tannin, which can delay aging and alleviate skin aging

3、 Help sleep

There is a substance in the grape skin, which can promote the pineal gland in the brain and secrete melatonin, which can regulate sleep and treat insomnia. Therefore, it is suggested that when eating grapes, it is best to eat them with skin, which can help sleep.

4、 Lower blood pressure

The flavonoids contained in it can not only protect the heart, but also soften blood vessels and increase blood flow, so as to reduce blood pressure. Therefore, it is recommended that people with high blood pressure often eat and do not spit, which will play an inhibitory role and have a good antihypertensive effect.