Fat is your friend. The brain thrives on a fat-rich, low-carbohydrate diet.

In this quote, David Perlmutter advocates for the benefits of fat in the diet, particularly emphasizing that the brain thrives on a fat-rich, low-carbohydrate diet. He challenges the common belief that fat is unhealthy and should be avoided, particularly in the context of brain health. According to Perlmutter, the brain requires healthy fats, such as those found in avocados, nuts, and olive oil, to function optimally. By focusing on a low-carb, high-fat diet, the brain can receive the necessary nutrients to enhance cognitive performance and protect against neurodegenerative diseases.

Perlmutter’s statement also speaks to the idea that carbohydrates, especially refined or processed ones, can have negative effects on the brain and body. He promotes a shift away from high-carbohydrate diets, which he believes contribute to inflammation and metabolic issues, and encourages people to incorporate more healthy fats instead. This type of diet is often associated with the ketogenic or paleo diets, which prioritize fats over carbohydrates for energy.

The origin of the quote lies in Perlmutter’s work as a neurologist and author. He is well-known for his advocacy of low-carb, high-fat diets as a means of improving brain health and preventing cognitive decline. His book Grain Brain further discusses how modern diets, particularly those high in processed sugars and carbohydrates, contribute to conditions like Alzheimer's and other neurological issues.

Ultimately, Perlmutter’s quote encourages people to rethink their approach to nutrition, especially regarding fat consumption. By emphasizing the importance of fats for brain function and mental health, he advocates for a balanced, sustainable diet that nourishes both the body and mind.