Three high refers to high blood pressure, high blood sugar, high blood fat, in fact, the diet taboo in its name already contains, namely, low salt, low fat, low calorie, low sugar diet. All do not meet the requirements are contraindicated, as follows: 1, low calorie, such as drinking alcohol and drinking high sweetness drinks, ice cream, these are high-calorie diet, drink into the fat, high fat, diabetes are not good control; 2, low salt diet, hypertension patients recommended daily salt intake <6g, in fact, 6g is not much, a small spoon, food, including instant noodles, cookies have added salt. So it is recommended to buy food to pay attention to the salt content of the food label, if the salt content is high, try to eat less or not, such as sauces, squash, pickles contain more salt, as well as containing nitrite and so on, these are unhealthy diet, try to eat more fresh vegetables, fruits; 3, diabetic patients should also moderate restrictions on fruit, if you want to eat, you can use fruits with a low glycemic index.