Weight loss heart discomfort may be related to exercise and eating less, but also may be related to taking weight loss drugs. 1. Exercise, eat less: weight loss will generally increase the amount of exercise, due to increased exercise leads to sympathetic excitation of the heart rate accelerated, serious cardiac discomfort; weight loss to eat less, easy to cause hypoglycemia, will also cause cardiac discomfort, panic and shortness of breath and other symptoms. 2. Weight loss drugs: a part of the population in order to lose weight, will take some weight loss drugs, often will have to promote the role of metabolism, resulting in accelerated heart rate, the emergence of cardiac discomfort. Must be healthy weight loss, step by step, under the guidance of a professional doctor, choose a suitable weight loss program. If heart discomfort occurs during weight loss, it is recommended to seek medical attention promptly.