Doctor reveals how long you should leave between meals

Many of us focus on what we eat, but far fewer consider when we eat, and according to a leading authority on gut health, the timing of our meals may have a significant impact on how well our digestive system functions.

As snacking habits rise and late-night eating becomes increasingly common, one expert argues that the gut may benefit far more from meaningful periods of rest than most people realise.

Allowing the body a break between meals, he suggests, could be as important as the foods we choose.

Professor Tim Spector, founder of Zoe Health and a prominent voice in microbiome research, shared guidance on supporting gut function through everyday routines.

Speaking in an Instagram video, he outlined a number of practices that may help improve overall digestive and immune health.

Among them was a recommendation focused not on changing what you eat, but on giving your gut sufficient time without food — particularly overnight.

Spector has shared the same sort of message across numerous videos, but in one, he states: “Try and have a break, so that you are eating within a 10 or 12-hour window so your microbes get a good night’s sleep.”

He explains that extended overnight gaps allow the gut’s microbial community to perform essential restorative processes that aren’t possible during continual eating.

Spector expands on this further in the caption of another one of his videos, advising longer breaks before the next meal.

He wrote: “Give your gut a rest – ideally 12 to 14 hours overnight, to allow specific microbes including Akkermansia muciniphila to clean up your gut lining and keep it healthy, which is important for supporting a healthy gut and immune system.”

Akkermansia muciniphila, a bacterium associated with reduced inflammation and lower risk of metabolic disorders, is one of several microbes believed to be particularly active during periods without food. Allowing time for these organisms to work, he suggests, supports a more resilient digestive system.

On the Zoe platform, he elaborated further on the benefits of avoiding constant grazing. He advised: “Try to avoid or limit snacking, and aim to give your gut bugs time to rest overnight.”

He adds: “At night, there is a whole team of gut microbes that work to clean up your gut lining and keep it healthy. This regular cleaning is important for supporting a healthy gut and immune system. By giving your gut bugs a break, they'll have time to recover to do their job well.”