D-Aspartic Acid (DAA) Raises Testosterone Levels For Men

Testosterone Boosters With D-Aspartic Acid

Ben BA(Hons), PGCert

When you are looking for an effective testosterone booster, nutrient analysis is key. As such, you may have read about D-Aspartic Acid.

It is an amino acid that can be key in raising testosterone levels, particularly if you are infertile or new to training.

LAST UPDATED: March 2019 by Ben

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What’s the fuss about D-Aspartic Acid?

D-Aspartic Acid is a proven ingredient that can help raise testosterone levels. [1]

It is present in many foods, yet the value per 100g does not really go above 10g.

Common foods that include D-Aspartic Acid are as follows:

Soy protein
Dried egg white
Cod fish
Tofu
Sunflower seeds
Pork
Beef

Essentially, the most D-Aspartic per 100g is found in the top food and gradually decreases as you go down. [2]

Yet, why is it so important?

In simple terms, D-Aspartic Acid is one of two amino acid aspartic acid, DAA is a regulator of testosterone synthesis.

It stimulates the release of growth hormone, luteinizing hormone and increases testosterone levels of up to 60% after building up in the testes. [3]

It can also have a major effect on male fertility with studies reporting that from a group of men who could not previously conceive, over a quarter did so after supplementation.

This correlates with an increase of up to 100% sperm mobility for infertile men. [4]

Yet, women are also to benefit, with younger women having a higher concentration of DAA than their older counterparts, which presents itself a relationship between DAA levels, age and fertility. [5]

Not only that, but it is worth noting that Nitric Oxide levels can increase also, but only in very high doses. [6]

With all of this in mind, and all of the studies presenting their findings, it now becomes clear why D-Aspartic Acid is such an important ingredient to ensure is in your testosterone booster.

Or at least, in your diet, if you like soy, dried egg white, sunflower seeds among others…

It is also imperative that you get sufficient amounts of D-Aspartic Acid for the benefits, 2000mg per day is about right. [7]

Soy and testosterone

This is where matters become a little confusing.

Soy protein offers the most DAA per 100g on that list.

However, soy itself has demonstrated in clinical trials to decrease testosterone.

Yes, it sounds crazy.

However, participants who were using soy protein powder for a month saw a decrease in their serum testosterone levels.

Once they stopped using the soy protein, their testosterone levels started to rise. [8]

Furthermore, there appears to be a evidence that would suggest soy products can reduce fertility, too. This consequently sparked a response from many media outlets in the UK. [9]

However, to muddy the waters further, alternative studies have produced findings that contradict those findings. [10]

In addition to this, even the Association of UK Dietitians state that here is no conclusive evidence that soy will increase estrogen levels. [11]