When you have very low body fat and eat fewer calories, your body lowers testosterone levels to save energy for staying alive instead of making babies.

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Pro

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Against

Evidence from Studies

Supporting (0)

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No supporting evidence found

Contradicting (1)

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Caloric Restriction Increases Serum Testosterone Concentrations in Obese Male Subjects by Two Distinct Mechanisms

Cross-Sectional Study

Human

2014 Apr

The study shows that when very overweight men cut calories, their testosterone goes up, not down, which is the opposite of what the claim says.

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Similar Assertions

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.

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36

93%

When men have very low testosterone for a long time, it can mess up their metabolism and make their body and mind not work as well as they should.

47

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77%

Low-carbohydrate, high-fat diets are associated with higher basal testosterone levels compared to high-carbohydrate diets in healthy adults.

40

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74%

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.

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74%

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.

31

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72%