DR. KELLY BOWDEN DAVIES

There are three approaches to take:

• Alternate day fasting: Eat whatever you want on off days, but limit calories to around 500 on fasting days.
• The 5:2 diet, which involves fasting during the week and making eating what you want on weekends....

• Intermittent fasts: eating no food or massively cutting back on calorie intake only intermittently;
• Time-restricted feeding: involves consuming calories only for a 4- to 6-hour window each day.
• Periodic fasts, the most ext...

While the time-restricted eating holds promise, there is a need for more research.

• There haven't been studies with humans that lasted longer than a few months.
• The gut microbiome actually changes in mice that restrict their eating to an eight-hour window, so they digest nutr...