Eating hazelnut kernel has no efficacy, the role is to supplement the body with nutrients. Hazelnut kernel as a nut food, does not belong to the medicinal herbs, does not have the efficacy of medicinal herbs, and can not be used to treat diseases. Hazelnut kernel content is the most abundant nutrients are fat, protein, carbohydrates, 100 grams of hazelnut kernel contains about 50g of fat, carbohydrates about 25g, protein 15g. can be used as a food source of these two nutrients. The fat inside the monounsaturated fatty acids, monounsaturated fatty acids are essential fatty acids, need to rely on food to provide. And fat is an important source of energy for the human body, which helps to maintain the normal life activities of the human body. Therefore, eating a moderate amount of hazelnut kernel is beneficial to the body, but too much food can easily cause gastrointestinal discomfort, bloating, nausea and other symptoms.