Ketone bodies, produced in the brain during fasting, assist in the faster cleansing of the brain from damaged proteins, which in turn protects us against diseases such as Alzheimer’s.

Red blood cells rely on glucose for energy and convert glucose to lactate. The brain uses glucose and ketone bodies for energy. Adipose tissue uses fatty acids and glucose for energy. The liver ...

including in the brain. “It turns out ketosis is not a monolithic state,” says Jonathan Long, an associate professor of pathology at Stanford Medicine. “There’s a lot more complexity and nuance in how ...