Whenever I go to the clinic, the most frequently asked question is: Doctor, what should I not eat? It is a common thing for people to avoid eating when they are sick, but today we will talk about the problem of avoiding eating from the perspective of modern medicine. 1, clearly allergic to food can not eat: if clearly allergic to a certain food, no doubt should be avoided, but how to determine the allergic food but there is a lot of learning. For food allergens, the existing allergen test results are for reference only. The gold standard is the avoidance re-feeding test and the double-blind placebo-controlled food provocation test. The most actionable method is to avoid the suspected food for two weeks, and if the symptoms are relieved and worsen with re-eating, the food allergy should be highly suspected. It was found that the prevalence of food allergy in adults is less than 2%, while the self-reporting rate of patients is greater than 7%, which means that most of the food allergies they think they have are not true allergies. Several common skin diseases are contraindicated in acne (pimples): spicy, oily foods can stimulate the synthetic secretion of sebaceous glands, and sweet foods can change the imbalance of skin flora and facilitate the reproduction of Propionibacterium acnes. Therefore, the above foods should be eaten sparingly. Lupus erythematosus, photosensitive dermatitis: photosensitive foods should be eaten less, such as some wild vegetables (such as ashwagandha), cilantro, lettuce, etc. Pruritic dermatoses such as neurodermatitis and pruritus: alcohol and pepper should be avoided, these foods can cause increased synthesis of pruritic mediators through non-specific stimulation. Rosacea (rosacea): should avoid alcohol, chili, coffee and strong tea, these substances can affect the diastolic function of blood vessels. 2, about “hair” folklore “hair” a variety of species, including male chicken, carp, cilantro, konjac, beef and lamb, leeks, about which foods belong to “hair”, around There are different opinions about which foods are “hairy”, and they are often contradictory to each other. Not only is there no concept of “hairy food” in modern medicine, but the traditional Chinese medical theory of hairy food is also different from the meaning of “hairy food”. Of course, the complex effects of food on the human body is not fully studied, we can not completely deny the impact of “hairy food” on disease, but if you believe in the full list of taboos, you may miss a lot of nutritious and delicious and does not affect the disease “innocent” food.