In nature, historically, there were very few ways to store carbs – which were available only for a short time seasonally. The solution to this is that when eating the available fruit in the autumn the sugars switch off the fat burning system and then use insulin to store the sugars as body fat. Carbs signal our body to go into fat storage mode. When the carbs run out then slowly the fat burning more resumes – first of all feeding ketones to the brain and other vital organs and then eventually to the muscles.
What the expert says: ‘Paleo does promote the consumption of fresh ingredients over salty, processed meats. It also advocates a high consumption of fruit and vegetables, which is no bad thing. Research published in the journal Nature suggests that following this kind of diet can improve blood pressure, insulin resistance and cholesterol levels. That said, it is incredibly restrictive, and cutting out dairy, cereal foods and starchy carbohydrates will likely leave you low on fibre, calcium and iodine.’
Sleep enough – for most people at least seven hours per night on average – and keep stress under control. Sleep deprivation and stress hormones raise blood sugar levels, slowing ketosis and weight loss a bit. Plus they might make it harder to stick to a keto diet, and resist temptations. So while handling sleep and stress will not get you into ketosis on it’s own, it’s still worth thinking about.