Unlike most fatty acids, ketones can be taken in and used as an energy source for the brain. In fact, the brain may actually prefer ketones to glucose; studies have shown that ketone uptake by the brain increases as blood ketone levels rise . There is also a lot of research demonstrating that a ketogenic diet can have brain-protecting effects in various types of damaged neurons, possibly due to the neurons receiving greater fuel reserves through ketones, less oxidative stress, and less inflammation . Even when glucose uptake by the brain is impaired, as it is in people with Alzheimer’s, traumatic brain injury, and Parkinson’s, ketones can still be utilized.