although staying in ketosis is a good way to burn body fat and ketones are a relatively good source of energy, from my research i see that a keto diet can have some consequences if youre not careful. im not a doctor (...yet... im a med student) but from what i know, the brain does not utilize ketones well. in fact, some reports from medical studies claim that the brain can only function properly on glycogen, and dependence on ketones can lead to brain tissue deterioration (i can get documentation for anyone who wants it). now, this seems to be contradicted by the countless people who tout the keto diet for its fat loss benefits, and dont ever claim to experience any side effects besides maybe having bad breath. i would like to know if anyone who has been on a keto diet has had any side effects such as memory loss, inability to concentration, and anything else that could be relevant. any input would be greatly appreciated because im compiling data for a report next year.