BHB serves as an energy source when the body lacks sufficient carbohydrates or sugars. It can also be synthesized in a lab and taken as a supplement. BHB is produced in the body when fat is metabolized, offering an alternative energy source for all body parts, including the brain. Among the three ketone bodies generated during ketosis—BHB, acetone, and acetoacetate—BHB is found in the highest concentrations in the bloodstream. It is one of the ketones the body produces during fasting or when following low-carbohydrate, high-fat diets. In these situations, the body naturally shifts its primary energy source from glucose (derived from carbohydrates) to stored fat.

Does BHB Burn Fat?

Keto diets increase BHB levels, promoting weight and fat loss. Exogenous ketones can also raise BHB levels, potentially helping to preserve muscle mass during periods of caloric restriction.