Testosterone is a well-known hormone thats responsible for muscle building and libido.
Because of this, people of all ages are looking for natural ways to increase it.
One popular method is to take the amino acid D-aspartic acid as in a dietary supplement.
In this video we’re looking at what it is and whether it increases testosterone.
Further reading: https://www.healthline.com/nutrition/d-aspartic-acid-and-testosterone
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STUDY 1: https://www.ncbi.nlm.nih.gov/pubmed/19860889
STUDY 2: http://www.scirp.org/journal/PaperInformation.aspx?paperID=24016
STUDY 3: https://www.ncbi.nlm.nih.gov/pubmed/24074738
STUDY 4: https://www.ncbi.nlm.nih.gov/pubmed/25844073
STUDY 5: https://www.ncbi.nlm.nih.gov/pubmed/28841667