Yes, often: It's complicated but what happens in normal weight boys at puberty is a huge surge of testosterone to make their penis and testicles enlarge, muscles and hair to grow and voice to deepen. In obese kids, a lot of the testosterone made gets converted to estrogen by an enzyme made in fat cells. The more fat cells, the higher estrogen levels and this lowers the bioavailable testosterone.
Answered 9/30/2020
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