What are the disadvantages of eating too many hazelnuts?

Hazelnut belongs to the common nut food, there is no medical “bad”, but do not recommend eating a lot.
Hazelnut nutritional value is high, 100g of hazelnut containing protein 20g, fat 44.8g, carbohydrates 14.7g, calcium 104mg, magnesium 420mg, dietary fiber 9.6g and other nutrients, which does not contain harmful substances to the human body, so there are no special side effects.
Consumption of hazelnuts 10-20g per day can supplement the body with nutrients and is conducive to good health; however, hazelnuts contain a large amount of protein and fat, excessive consumption may increase the gastrointestinal digestive burden, and there is a risk of weight gain.
At the same time, it should be noted that if you are allergic to hazelnuts, the consumption of hazelnuts may cause some adverse reactions, such as rashes, itching, edema of the larynx, respiratory difficulties, etc., thus affecting the health of the body, so the people who are allergic to hazelnuts should avoid eating.