Four possible benefits of fasting, according to science


When people want to lose weight, the potential benefits of fasting can seem very appealing, because only having a certain window to eat means you potentially consume fewer calories.

But what is fasting? According to registered dietitian Marcela Fiuza (opens in new tab)a spokesperson for the British Dietetic Association (opens in new tab), fasting means consuming no calories in a certain time frame. It can be ‘intermittent’, meaning you switch between eating and fasting, or ‘prolonged’, which generally means fasting from two days onwards.


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