He added: “Because The Very Fast 800 is an intensive approach to weight loss, it is not suited to everybody.
“As with any diet, you should speak to your usual health professional before commencing The Very Fast 800 approach, and please see our medical disclaimer for information regarding cautions and exclusions indicating who shouldn’t do the diet.”
Dr Mosley also recommends following the keto diet, a high fat low carb plan.
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source: express.co.uk