If your testosterone levels go as high as they possibly can without being considered abnormal, it might cause serious side effects in some people.

Evidence from Studies

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Contradicting (1)

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Testosterone deficiency and treatments: common misconceptions and practical guidance for patient care.

Narrative Review

Human

2025 Jul 3

The study says testosterone therapy is generally safe, but it doesn’t look at whether pushing testosterone to the very top of the normal range causes problems in some people — so it doesn’t answer the claim.

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Similar Assertions

The more testosterone you have in your blood, the stronger both the good and bad effects on your body become — like a volume knob turning up both the benefits and the side effects at the same time.

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Doctors aren't sure if taking testosterone helps or hurts your heart, because some recent studies say it’s risky and others say it’s fine.

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Studies with lots of people and strict methods show that giving men testosterone at normal body levels doesn’t make them more likely to die or have serious heart problems.

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For the last 85 years, doctors and scientists have been slowly making testosterone medicines better so they mimic the natural levels of testosterone your body usually has.

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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.

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