If healthy guys don't eat for six days, their bodies show higher levels of certain chemicals linked to how the body handles stress and metabolism, with the highest levels seen right at the end of the fast.

46

Pro

0

Against

Evidence from Studies

Supporting (1)

46

Community contributions welcome

46

Exploring the effect of prolonged fasting on kynurenine pathway metabolites and stress markers in healthy male individuals

Randomized Controlled Trial

Human

2024 Aug

The study looked at healthy men who didn’t eat for 6 days, and found that certain brain-related chemicals increased, just like the claim says.

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.

Source Study

Exploring the effect of prolonged fasting on kynurenine pathway metabolites and stress markers in healthy male individuals

Score: 46

DOI: 10.1038/s41430-024-01451-7

Similar Assertions

After a 6-day water-only fast, a man’s metabolism resets certain chemicals in his body back to normal within a week of eating again—even if he hasn’t regained all his weight yet.

46

0

82%

Fasting for six days with no calories may lower certain chemicals in the blood linked to brain health — one drops because you're not eating, and the other suggests your body is producing fewer harmful substances.

46

0

81%

When you fast or eat less, certain chemicals in your body from the kynurenine pathway help your body respond in ways that keep you healthier for longer.

46

0

76%