Whether weight loss will fall strength, mainly depends on the specific reasons and methods of weight loss; because the metabolic condition abnormalities lead to body consumption, body weight loss, strength generally may be weakened; is through the body exercise caused by the weight loss, strength generally will not be weakened. 1. The body has hyperthyroidism, diabetes or malignant tumors and a series of reasons, resulting in body energy consumption, will cause weight loss, and may lead to strength loss; simply through dieting caused by starvation state caused by weight loss, may also lead to strength loss. 2. Increasing the body’s consumption by strengthening physical exercise will also lead to weight loss in the whole process, but through exercise, the body’s muscles will become developed, and its own strength will not be weakened in general. Unexplained weight loss, need to consult a doctor in time to observe, diagnose the specific cause of the disease and then do standardized treatment.