There are physiologic causes of decreased creatine kinase, low metabolic state, etc. Decreased creatine kinase is not significantly harmful to the human body. Some people are born with a low basal metabolic rate, which can lead to low levels of creatine kinase, which is a physiological change and will not cause serious damage to the human body. There are also some patients who are bedridden for a long period of time and lack of exercise, resulting in a low metabolic state of the human body, which can lead to a decrease in creatine kinase. Creatine kinase itself will not cause damage to the human body, the primary disease that causes the elevation of creatine kinase will cause damage to the human body, resulting in a decrease in the level of creatine kinase has no practical significance, mostly related to low metabolism, there is no obvious damage to the human body, so there is no need to be overly concerned.