The heart rate does not necessarily slow down when a person loses weight, and the body’s fatness or thinness does not have a significant effect on the heart rate. The main control point of the human heart for the sinus node, the function of the sinus node will be affected by inflammation, functional aging, myocardial ischemia and other factors, such as myocarditis, myocardial ischemia patients may appear slow heart rate, but the body weight loss will not be a significant impact on the sinus node, weight loss does not necessarily appear to be a slow heart rate. People in the process of weight control do not have to worry about the impact of weight on the heart rate, to pay attention to the specific causes of weight loss, weight loss of people should be reasonable calorie control, unexplained weight loss should be careful to consider diabetes, hyperthyroidism, tumors and other diseases. Weight loss of people who have a slow heart rate, it is necessary to pay attention to find the cause, under the guidance of the physician to give treatment.