HMB is a substance that your body produces naturally.
It has a few different names, depending on the version of the molecule. It is also known as beta-hydroxy beta-methylbutyric acid, beta-hydroxy beta-methylbutyrate, and hydroxymethylbutyrate.
It’s made when your body breaks down leucine, a branched-chain amino acid (BCAA) that’s essential for protein synthesis and muscle repair.
However, your body only produces HMB in small amounts. So, many people take it as a dietary supplement to increase HMB levels in their body .
Studies have linked taking HMB supplements to certain benefits, such as increased exercise performance, reduced muscle breakdown, and increased muscle growth in untrained and older adults.
HMB is widely available from supplement stores, health food stores, and online. It comes in various forms, such as capsule, tablet, and powder.
Studies have found that taking HMB may be associated with numerous benefits, especially in the area of body composition. These include increased muscle growth and reduced muscle breakdown.
While quite a few studies have examined the impact of HMB, additional research is needed to fully understand its effects in various populations.
Here are some of the promising benefits of taking HMB.
*May aid muscle growth in certain people
Companies commonly market HMB as a supplement that aids muscle growth. However, research on HMB in this area shows mixed results and is inconclusive.
*May help reduce muscle breakdown
Research suggests HMB may help reduce muscle breakdown.
Test-tube studies suggest that HMB may help prevent muscle breakdown in various ways inside cells, such as by suppressing genes and enzymes that promote the breakdown of muscle proteins (12Trusted Source).
*May aid exercise adaptations
Some research has indicated that HMB could improve adaptations to exercise. This refers to a longer-term change rather than an immediate one.