Our bodies have two modes: fat-storing and fat-burning. The switch between them is the hormone insulin, which rises every time we eat. While insulin is up, the body is in storage mode and cannot burn fat. But when we take a proper break from food, even just finishing eating earlier in the evening, insulin has the chance to fall. When it drops far enough and for long enough, the body automatically shifts into fat-burning mode.

I sometimes get so absorbed in the daily practice of Time Related Eating that I forget to talk about this. I had a note on my desk for weeks that said simply “metabolic switch” because I wanted to remind myself to share it.

And here is more good news. Research reported in The Times on 10th March by Peta Bee, drawing on a study from Northwestern University in Chicago published in the American Heart Association’s journal, found that just a 12-hour overnight fast improves metabolic health, insulin sensitivity, sleep, gut health, cardiovascular health and long-term brain health. A further study from the University of Aberdeen’s Rowett Institute showed that metabolic efficiency is at its best earlier in the day, so eating earlier in your window supports weight regulation and appetite control.

You do not have to fast dramatically to unlock the benefits of Time Related Eating. You just have to take a reasonable break. No tricks, no restriction, just time management. This is the humane and compassionate way to go.

Jo writes about the metabolic switch and much more in her daily On the RAFT diary, available to members of the Foodsane community. Membership is £10/month with no contract. Join here.