Jump to content

Wikipedia:Today's featured article/requests/Beta-Hydroxy beta-methylbutyric acid

From Wikipedia, the free encyclopedia

Beta-Hydroxy beta-methylbutyric acid

[edit]

{{subst:TFAR top|passed=yes|date=May 28, 2018|monthyear=March 2018}}

The skeletal formula of β-hydroxy β-methylbutyric acid

β-Hydroxy β-methylbutyric acid (HMB) is a naturally produced substance in humans that is used as a dietary supplement and as an ingredient in certain medical foods that are intended to promote wound healing and provide nutritional support for people with muscle wasting due to cancer or HIV/AIDS. In healthy adults, supplementation with HMB has been shown to increase exercise-induced gains in muscle size, muscle strength, and lean body mass, reduce skeletal muscle damage from exercise, improve aerobic exercise performance, and expedite recovery from exercise. Medical reviews and meta-analyses indicate that HMB supplementation also helps to preserve or increase lean body mass and muscle strength in individuals experiencing age-related muscle loss. HMB produces these effects in part by stimulating the production of proteins and inhibiting the breakdown of proteins in muscle tissue. HMB is a metabolite of L-leucine and is produced in the body through oxidation of the ketoacid of L-leucine (α-ketoisocaproic acid). Since only a small fraction of L-leucine is metabolized into HMB, pharmacologically active concentrations of the compound in blood plasma and muscle can only be achieved by supplementing HMB directly. (Full article...)