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D-aspartic Acid Health Benefits
D-aspartic acid health benefits include a role in erectile dysfunction and sexual health, associated with its ability to increase testosterone production. The amino acid D-aspartic acid is formed naturally in the body when the enzyme aspartate racemase changes L-aspartic acid into D-aspartic acid in the testes and other glands.
D-aspartic acid has several specific tasks in the body. One is to rapidly increase the production of testosterone by increasing the production of signal molecules that regulate the secretion of luteinizing hormone and testosterone. Dietary sources of D-aspartic acid include soy protein, corn protein, and casein (a milk protein used in processed foods).
A study conducted in Italy and published in the journal Reproductive Biology and Endocrinology involved 43 men ages 27 to 37 years: 23 were given 3.12 grams of D-aspartic acid daily and 20 took placebo. Twenty of the 23 men who took D-aspartic acid averaged a 42 percent increase in testosterone levels after 12 days of treatment. Twenty of 23 also showed a significant increase in luteinizing hormone levels. Similar results were seen in rats that were administered D-aspartic acid.
Multiple websites advertise D-aspartic acid health benefits as being a booster of testosterone levels and also including an ability to improve performance associated with strength training. D-aspartic acid also has a role in the production of sperm and may gave a part in reproduction and male fertility as well. (D’Aniello 2005)
Using D-aspartic Acid
The amount of D-aspartic acid found to be effective in the one study mentioned was about 3 grams daily. However, men who want to explore D-aspartic acid health benefits should consult their healthcare provider before taking the supplement.
Reference
D’Aniello G et al. Occurrence of D-aspartic acid in human seminal plasma and spermatozoa: possible role in reproduction. Fertility and Sterility 2005
Topo E et al. The role of molecular mechanism of D-aspartic acid in the release and synthesis of LH and testosterone in humans and rats. Reprod Biol Endocrin 2009; 7;120
