Because of the toon it contains high nitrite and nitrate, and the toon is also hair, so people with chronic diseases are not allowed to eat, Yin deficiency people should not eat the toon, and some people will be allergic to consume the toon.

Toon forbidden food are: toon and milk with food will appear bloating; with cauliflower with food will affect the absorption of calcium; with cucumber with food will affect the absorption of vitamin C; with high potassium food with food may appear diarrhea or even gastrointestinal cramps; with animal liver or vitamin K with food will affect the absorption of nutrients, these foods are not to be eaten with the toon.