Not only electrolytes but the lack of fibre is also a big problem when you fast more than a few days.
Body needs fibre to maintain a healthy gut flora. So when the body lose the flora, it will struggle to digest the food, take the vitamins and nutritions from it etc. at the end of the fasting period.
This is not only something I read from articles but also something I have experienced for a long time by the way. So please bear that in mind, keep your gut flora healthy and your life will be easier.
I don't think this has been well established. We have several examples of people who have eaten nothing but animals products for long periods, without adverse health effects.
Body needs fibre to maintain a healthy gut flora. So when the body lose the flora, it will struggle to digest the food, take the vitamins and nutritions from it etc. at the end of the fasting period.
This is not only something I read from articles but also something I have experienced for a long time by the way. So please bear that in mind, keep your gut flora healthy and your life will be easier.