The claimEvidence B · meta-analysis
16:8 intermittent fasting boosts metabolism
The evidence
TRE matches plain calorie restriction; no metabolic uplift. Harmful for pregnancy or eating-disorder history.
Why the claim spreads
Time-restricted eating went viral via best-selling books and influencer before/after photos; 'boosts metabolism' is far more clickable than 'it's just calorie restriction with a clock on it.'
The mechanism, in brief
Fasting is one of the hottest yet most misread topics in current health discourse. Roughly five mainstream protocols:
Sources (2)
- Liu, D., Huang, Y., Huang, C., Yang, S., Wei, X., Zhang, P., et al. (2022). Calorie restriction with or without time-restricted eating in weight loss. New England Journal of Medicine, 386(16), 1495-1504.
- Trepanowski, J. F., Kroeger, C. M., Barnosky, A., Klempel, M. C., Bhutani, S., Hoddy, K. K., et al. (2017). Effect of alternate-day fasting on weight loss, weight maintenance, and cardioprotection among metabolically healthy obese adults. JAMA Internal Medicine, 177(7), 930-938.