A classical
ketogenic diet — with a staggering 70 - 90 percent of total calories coming from fat — might not be necessary.51 Classical
ketogenic diets restrict protein as well as carbohydrate, since 48 - 58 percent of the amino acids in dietary proteins can be glucogenic, thereby undermining the purpose of a diet intended to generate a high amount of ketones and limit glucose as much as possible.46 As
therapy for AD,
however, simply lowering carbohydrate intake to a point where some ketones are generated and hyperinsulinemia is corrected could have positive effects just by easing the metabolic burden on the brain.
Adrienne Scheck has shown that when applied with curative doses of radiation
therapy, the
ketogenic diet can make brain tumors vanish in mice.2
However, many dietary changes appear to blunt cancer growth in mice, 3 and the effects in humans are less clear.