Hyperthyroidism does not keep on losing weight. The common symptoms of hyperthyroidism include panic attacks, sweating, hand tremors, hunger pangs, excessive food and hunger, loss of weight, irritability, nervousness, insomnia and forgetfulness, menstrual disorders in women and impotence or premature ejaculation in men. It is necessary to control the diet, avoid food containing high iodine, eat more vegetables, fruits, pure milk, etc. Avoid smoking, alcohol, coffee, strong tea. Oral treatment with methimazole and propylthiouracil is needed. When the nail function is normal and the condition is stable, the patient will slowly gain weight. If the control is not good or the hyperthyroidism is repeated, the weight will not increase and will continue to lose weight.