Middle-aged people appear legs more and more thin, common in the following reasons: 1, normal aging phenomenon: middle-aged patients if long time to keep sitting work, seldom participate in sports activities, with age, the lower limb muscles will have obvious atrophy, is a normal aging phenomenon. If you participate in sports activities and exercise leg muscles, you can significantly improve the diameter of the legs, so that the power and strength of the legs gradually increase. 2, diabetes: patients will appear in the body of the metabolic disorders, but also prone to cause muscle malnutrition of the lower limbs, resulting in the legs are getting thinner and thinner and difficult to walk, and can even appear in the lower limbs of the pain symptoms. Therefore, middle-aged patients with thinning legs should be diagnosed and treated as early as possible, so that the clinical symptoms can be rapidly improved and normal life, work and sports can be resumed.