Apple peel contains the most dietary fiber. A medium-sized apple peel contains 4.4 grams of dietary fiber. After peeling, the dietary fiber in apple meat is only 2.1g.

Apple peel contains the most vitamins. A medium-sized apple peel contains 8.4 mg of vitamin C and 98 international units (IU) of vitamin A. After peeling, the two vitamins in apple pulp are only 6.4 mg and 6 1 IU.

Eating apples with skin protects the lungs. A study published in the American magazine Health found that apple peel is rich in natural antioxidant quercetin, which can protect the lungs from pollutants. Eating at least five apples a week can improve lung function.

Eat apples with skin to protect memory. An early study also found that quercetin, an antioxidant rich in apple peel, helps to prevent brain tissue damage related to degenerative diseases such as Alzheimer's disease (Alzheimer's Harmo's disease), thus helping to protect memory.

Apple peel has the function of preventing cancer. Liu Jiaoshou, a food science expert at Cornell University, and his colleagues published a study in the American Journal of Agricultural and Food Chemistry, and found that apple peel has a good anti-cancer effect. Researchers have identified more than a dozen triterpenoids from apple peel, which can inhibit the growth of cancer cells such as liver cancer, colon cancer or breast cancer, and can also kill cancer cells.

Extended data

Apple taboo

Taboo 1, apples should not be eaten with seafood.

Apples contain tannic acid. Eating with seafood not only reduces the nutritional value of seafood protein, but also tends to have symptoms such as abdominal pain, nausea and vomiting. Similarly, other fruits with much tannic acid, such as strawberry, bayberry, persimmon, pomegranate, lemon, grape, sour pomelo, etc., should not be eaten with seafood.

Apples are rich in nutrition, so when eating apples, you should chew slowly, which is not only beneficial to digestion, but also can prevent diseases and fight cancer.

So although the nutritional value of apples is very rich, if we want to have a healthy body, then we should pay attention to our diet, so that apples can eat healthily.

Taboo 2. Don't eat apples at night.

Many people are used to eating apples when they are hungry at night. Apples in the morning are golden, while apples in the evening are rubbish. This is not good for your health.

Taboo three. You can't eat apples just after dinner.

Eating apples after dinner 1 hour can promote digestion. But eating apples just after dinner is not good for digestion.

Taboo 4, patients with ulcerative colitis can not eat.

Patients with ulcerative colitis should not eat apples raw, especially during acute attack. Because the intestinal wall ulcer becomes thinner and the apple is hard, the stimulation containing 1.2% crude fiber and 0.5% organic acid is not conducive to the healing of the ulcer surface of the intestinal wall, and it is easy to induce complications such as intestinal perforation, intestinal dilatation and intestinal obstruction due to the mechanical action of the intestinal wall.

People's Health Network-Eat apples without peeling them. Eating apples with skins can protect memory.

People's Health Network-Eating apples like this is very harmful to your health. Four taboos for eating apples