Time-Restricted Eating: Any Better Than All-Day Eating?- JAM
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Time-restricted eating -- a type of intermittent fasting -- proved no better for weight loss than eating consistent meals throughout the day, a new study found.

The efficacy and safety of time-restricted eating have not been explored in large randomized clinical trials. This study aimed to determine the effect of 16:8-hour time-restricted eating on weight loss and metabolic risk markers. Participants were randomized such that the consistent meal timing (CMT) group was instructed to eat 3 structured meals per day, and the time-restricted eating (TRE) group was instructed to eat ad libitum from 12:00 pm until 8:00 pm and completely abstain from caloric intake from 8:00 pm until 12:00 pm the following day.

This 12-week randomized clinical trial including men and women aged 18 to 64 years with a body mass index (BMI, calculated as weight in kilograms divided by height in meters squared) of 27 to 43 was conducted on a custom mobile study application. The primary outcome was weight loss. Secondary outcomes from the in-person cohort included changes in weight, fat mass, lean mass, fasting insulin, fasting glucose, hemoglobin A1c levels, estimated energy intake, total energy expenditure, and resting energy expenditure.

-- Overall, 116 participants (mean age, 46.5 years; 70 men) were included in the study.
-- There was a significant decrease in weight in the TRE, but no significant change in the CMT group or between groups.
-- In the in-person cohort, there was a significant within-group decrease in weight in the TRE group.
-- There was also a significant difference in appendicular lean mass index between groups.
-- There were no significant changes in any of the other secondary outcomes within or between groups.
-- There were no differences in estimated energy intake between groups.

Conclusively, time-restricted eating, in the absence of other interventions, is not more effective in weight loss than eating throughout the day.

Source: https://jamanetwork.com/journals/jamainternalmedicine/article-abstract/2771095