Alternate day fasting: what is it and how does it work?

Alternate day fasting is a type of intermittent fasting that can be used for weight loss and other potential health benefits. It may not be the best form of intermittent fasting for everyone, and we encourage you to explore other types if you find it doesn’t suit you. In particular, women and those with underlying health conditions should be careful.

Fasting has numerous health benefits, possibly due to ancestral eating patterns. Early hunter-gatherer humans would go for longer periods of time without eating than we do in the modern day, and the body might have used these periods to ‘clean’ itself of toxins and potentially dangerous mutated cells. As well as this cleaning system, when the body goes into fasting mode, it switches from using food as fuel to using ketones, which the body makes by metabolizing fat stores. We can still trigger these responses through fasting, for results such as weight loss.

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