ScienceContemporaryglobalmedium confidence

In a three-month study, people following a fasting-mimicking diet consumed approximately 750–1,100 calories per day for five days each month and lost weight without losing muscle mass.

Notes on verification

Core weight-loss and calorie/duration details confirmed by a science.org report on a randomized clinical trial. Muscle-preservation detail corroborated by a separate but related FMD study, not the same trial, so evidence is combined from two sources rather than one unified study. [tier=silver indep_score=0.925 clusters=2 claim_tier=notable]

Sources