Your brain burns fat for energy along with small amounts of carbohydrates that your body produces. Your body stores fat from carbs and sugar (too much protein can act like sugars and carbohydrates). Eating lots of vegetables is enough to keep your essential minerals and vitamins at a healthy level. I've haven't heard of anyone being a diabetic on keto and many people who had diabetes are being cured. Alzheimer's, cancer, Parkinson's, and other disorders including inflammation are being linked to sugar and carbohydrates so people are finding help with keto.
The diets people are eating and the amount of processed foods are nothing like what was available prior and it's getting worse. Food from the grocery stores is nothing like the food from when I was growing up. Almost all store bought grains are GMOs and pesticides.
