“The keto diet often gets compared to the paleo diet (“returning to our ancestors’ way of eating”), but that isn’t quite accurate,” says Uta Boellinger, a BANT-registered nutritionist. To get into ketosis, Cox suggests you “keep carbs very low, usually around five per cent of daily calories, while most of your calories come from fat – above 60 per cent – and the rest from protein.” “Because most of us keep our glucose stores ‘topped up’ most of the time, it usually takes two to four days of strict carb restriction before your body actually transitions into ketosis,” says Cox.