When overweight men eat fewer calories, their bodies slow down the process that turns testosterone into estrogen. This means they have more testosterone relative to estrogen, showing that fat tissue isn't making as much estrogen as before.

When overweight men eat a very low calorie diet for 12 weeks, their testosterone levels go up a lot, which can help improve their health.

When overweight men eat fewer calories, it raises a protein in their blood that changes how their body uses testosterone, which can impact things like energy and health.

In people with obesity, fat tissue that makes more estrogen seems to be linked to having more total body fat.

When you don't eat enough food and your body fat gets very low, your body slows down the hormones that make testosterone, focusing on staying alive instead of having kids.

Belly fat naturally makes less estrogen than fat under the skin, no matter if you're a man or a woman.