Dietary and nutritional supplements featuring beta-hydroxybutyrate esters, acetoacetate, acetoacetate esters, and precursors thereof such as 1,3-butanediol, medium chain triglycerides, medium chain fatty acids, and medium chain fatty acid esters, in combination with a hemp derived cannabinoid, namely cannabidiol and tetrahydrocannabinol; the dietary and nutritional supplements containing not more than trace amounts of naturally occurring cannabidiol and having a delta-9 THC concentration of n...