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A small clinical trial finds that eating later in the day (12 pm to 11 pm) increased weight gain, raised insulin, fasting glucose, cholesterol, and triglyceride levels compared to eating earlier in the day (8 am to 7 pm).

In the small study, each of the nine healthy weight adults underwent each of the two conditions: daytime eating (three meals and two snacks between 8 a.m. and 7 p.m.) for eight weeks and delayed eating (the same three meals and two snacks eating from noon to 11 p.m.) for eight weeks after a 2-week washout period. This is a small trial and needs to be repeated but is in line with another study that showed when healthy adults eat meals that are identical for breakfast, lunch, or dinner, the postprandial glucose increase is lowest after breakfast and highest after dinner even though the meals were 100% identical.

For more on meal timing and time-restricted eating…check out my podcasts with the experts, Dr. Satchin Panda and Dr. Ruth Patterson on youtube and iTunes.

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    Very interesting that S. Panda considers anything other than water even black coffee as breaking the fast. I had been doing a sloppy version of time restricted eating. I was having diner by 5pm but between then and 11pm I might consume a few cups of coffee and perhaps 100 calories from a very small piece of sugar free dark chocolate. Two weeks after eliminating everything but water after 6pm my diabetes seems to be in better controle.

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      i wish they would account for those people who are night owls and have been eating this way for years. also surprised that the eve group who was fasting for 12 hours so no benefits. that goes against the fat burning ketosis, intermittent fasting studies that show lower fasting glucose and more fat burn. also they ate at 11pm and went to sleep at 11pm. what about those who eat very late but go to sleep 2 hours later? not to mention, those who go to the gym at night. that wasn’t mentioned either.