correlational
Analysis v1
Strong Support

Men who ate fewer carbs (especially sugar and white bread) had less damage to their sperm DNA, possibly because high sugar intake increases harmful stress in the body.

40
Pro
0
Against

Evidence from Studies

Supporting (1)

40

Community contributions welcome

The study gave subfertile men a healthier, lower-carb diet and found their sperm became less damaged — which is exactly what the claim says happens when carbs are cut down.

Contradicting (0)

0

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.