The ketogenic diet is gaining in popularity for reasons ranging from general wellness to medical treatment to improving specific types of athletic performance. In addition to the ketogenic diet, there are alternative approaches to providing ketones for the body to burn as fuel. One of these approaches involves consuming ketones in a food called ‘ketone ester’. In this talk, Dr. Kernagis will provide an overview of past findings and current human research on ketone esters that is relevant to technical divers.