People who are not suitable to eat eel are mainly patients with hypercholesterolemia, hyperlipidemia and other patients, as well as patients taking certain fishy foods that need to be avoided, and other groups of people. Eel cholesterol content is relatively high, nutritional research shows that 100 grams of eel its content of 177mg, if it is hypercholesterolemia, hyperlipidemia and other such patients, is not very suitable for eating eel, especially should not be too much overdose, to avoid unfavorable conditions. Some patients are also taking some proprietary Chinese medicines, the need for daily diet of certain food taboos, such as taking anti-wind and itch particles, anti-feng Tongsheng pill, etc., this kind of drug instructions, in the precautions have been clearly stipulated: during the medication should be avoided during the mouth of fresh fish and fishy food. If this is the case, it is also not suitable to eat eel, so as not to be detrimental to the treatment. In addition, most people can eat eel normally, but for some of their own poor digestive function of children and some older people, to discretionary moderate consumption, do not eat too much, so as not to indigestion.