keto is not for temporary weight loss. if you don't lose weight and you feel lousy, find another eating plan. if you lose weight and your numbers at the doctor are great and you feel wonderful and you have more stamina and energy..then you probably need to eat a version of this..adapting to your own metabolism..forever. we all have a limit of how many carbs we can eat and maintain a good weight. mine is very very low and i am not active enough. if you ski every day you can eat more. if your ancestors are from one group of people and were very healthy you could probably eat what they ate..lots of fish perhaps..or lots of fruit perhaps. problem is by now most of us are quite mixed genetically so we generally don't know. i would start with getting my insulin..along with blood sugar..but insist on insulin..checked. some people need fish oils because they don't produce the right fatty acids..ancestors probably ate a lot of fish so they did not need to produce acids themselves. if you need certain fatty acids and don't produce them or eat them...you can very well have brain imbalances.