https://www.sciencedaily.com/releases/2021/10/211005101908.htmThe article above talks about how taking ketones (I'm not sure which kind or what amounts) three times a day for fourteen days helped to improve things like working memory, processing speed, and brain circulation (blood flow to the brain) in obese individuals.
brain_circulationworking_memoryprocessing_speedexecutive_functionobesity_brain_healthketone_