descriptive
Analysis v1
Strong Support
In young, healthy men who regularly lift weights, eating a diet high in carbohydrates or high in fat—while maintaining sufficient protein and calories—does not change the levels of testosterone or estradiol in the blood.
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Evidence from Studies
Supporting (1)
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Community contributions welcome
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Scientists gave two groups of guys who lift weights different diets—one with lots of carbs, one with lots of fat—but their testosterone and estrogen levels stayed the same either way. So, what you eat (as long as it’s not extreme) doesn’t mess with these hormones in healthy, active men.
Contradicting (0)
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Community contributions welcome
No contradicting evidence found
Gold Standard Evidence Needed
According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.