Trace elements can be checked by adults, trace elements are widely distributed in all tissues of the human body, the content of which is relatively constant. Trace elements are extremely small in the human body, but they have a very strong effect, and they play a variety of roles in the body through the formation of binding proteins, enzymes, hormones and vitamins, etc. Trace elements mainly come from food. Trace elements mainly come from food, animal food content is higher, more types of food than plant food, so long-term dietary arrangement is not reasonable or partiality of food people will appear trace element deficiencies, in addition to certain diseases will affect the absorption of trace elements, causing trace element deficiencies, such as hypothyroidism affects the absorption of iron, which can cause iron-deficiency anemia. After middle age, as people grow older, their digestive function will gradually weaken, and their absorption ability will gradually decline, so it will gradually cause trace element deficiency. According to the above, if there are factors that lead to micronutrient deficiencies in adults, it is recommended to take a micronutrient test, and if there are any micronutrient deficiencies, correct them according to the deficiencies.