For men who have low testosterone, giving them testosterone therapy doesn’t seem to make prostate cancer more likely, so doctors can feel more confident using it when it’s properly needed.

For men with low testosterone, taking testosterone therapy doesn’t seem to raise their risk of heart problems, so doctors can prescribe it without worrying too much about the heart.

For men between 55 and 67, taking testosterone therapy doesn’t seem to increase their chances of getting prostate cancer compared to men who don’t take it, based on a long-term study of nearly 3,000 men.

For men with low testosterone, taking testosterone therapy doesn't seem to make heart failure or heart-related death more likely—even though these men were already at high risk for heart problems.

Giving men the normal amount of testosterone their bodies should have doesn't make them more likely to get prostate cancer.

For men who have both diabetes and low testosterone, taking testosterone therapy might help them live longer — studies show they were 15% less likely to die over about 3 years compared to those who didn’t take it.