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GABA increases resting and post-exercise growth hormone levels

Supplementing with gamma aminobutyric acid (GABA) increased growth hormone in the body, in a new study.

GABA is an amino acid produced in the brain and has been referred to as the “brain’s natural calming agent” because it can help relieve tension and promote relaxation. Participants in a University of Florida study took either 3 grams of GABA or placebo, followed either by resistance exercise sessions or rest.

Researchers found that GABA ingestion elevated the levels of two types of growth hormone compared to placebo. More specifically, it elevated growth hormone levels followed by rest and also increased growth hormone levels followed by resistance training. The study did not measure the effects of the increased growth hormone levels on muscular hypertrophy (increases in muscle mass). 

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