Dr Michael Mosley, who created the Fast 800 diet, explained why having a breakfast high in fibre is so important.
“Diets high in fibre help you stay full and feed the good bacteria in your gut, for an improved mood. There are two type of dietary fibre, soluble and insoluble – yet both have great benefits.
“Soluble fibre aids digestion and helps to reduce blood sugar levels, which can assist in reducing the risk of insulin resistance and type 2 diabetes. Insoluble fibre also helps to reduce the risk of type 2 diabetes and promotes bowel regularity by adding water to stools, preventing constipation,” he explained.
“The Fast 800 is a diet that follows the principles of the Mediterranean diet, a relatively high fat, low-ish carb, high fibre way of eating, with an abundance of fresh fruit and vegetables, oily fish and olive oil and has a low glycaemic index, meaning it keeps blood sugar levels stable,” he told Express.co.uk.