Adult men with impaired glucose tolerance or recently diagnosed diabetes but no pathological hypogonadism who took 1,000 mg of testosterone undecanoate and underwent a lifestyle program from WW for two years had a lower risk for type 2 diabetes, compared with those who took placebo and participated in the lifestyle program, according to a study in The Lancet Diabetes & Endocrinology. Men in the testosterone therapy group had bigger declines in waist circumference, total fat mass, abdominal fat mass and fasting glucose, while those treated with placebo had a decrease in total muscle mass, arm muscle mass and hand-grip strength.