It is easy to say why the company would make that claim about its supplement. Here’s the thing; your brain can only use glucose for energy production due to the presence of the blood-brain barrier around it. Therefore, when your body goes into ketosis, the brain gets more supply of glucose. This is because the rest of the cells in the body are not using carbs as they are getting their energy from fats. So, the energy produced by the carbs can be designated for the brain. Now, this may help in improving the brain’s function. But more research is needed in this regard to determine how true this claim is.