Eating less food for six months helped older male rats have better swimming sperm, and this improvement lasted for a year compared to rats that ate normally.

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Pro

10

Against

Evidence from Studies

Supporting (0)

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No supporting evidence found

Contradicting (1)

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Community contributions welcome

10

Effect of Chronic Moderate Caloric Restriction on the Reproductive Function in Aged Male Wistar Rats

Cohort Study

Animal

2022 Mar 16

The study says the good effects on sperm movement didn't last for a full year, but the claim says they did, so the study contradicts the claim.

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.

Source Study

Effect of Chronic Moderate Caloric Restriction on the Reproductive Function in Aged Male Wistar Rats

Score: 10

DOI: 10.3390/nu14061256

Similar Assertions

Researchers found that when they put middle-aged male rats on a diet with 15% or 35% fewer calories, it helped their reproductive health at first. But after a year on the diet, these benefits went away, and only one-third of the dieting rats still showed normal mating behavior compared to all of them at six months.

10

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83%

Eating less food for six months helped older male rats have better sex lives by making them mount and mate faster and ejaculate more often, compared to rats that could eat as much as they wanted.

10

0

80%

When rats eat less food for several months, their testosterone levels go up compared to rats that eat normally.

10

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77%