The high-fat, low-carb keto diet may slow brain ageing and protect from diseases like Alzheimer's and Parkinson's, a new research review suggests.
The lack of carbohydrates in a keto diet mimics starvation, inducing the body into a metabolic state known as “nutritional ketosis”, forcing it to shift its main energy source from glucose to molecules called ketones. This means that the body burns fat instead of carbohydrates, a process that can cause some people to lose weight.