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Just like there are many foodstuffs which can increase testosterone levels, there are also many foods that lower testosterone in men.
In this video we’re looking at a food that can have a negative effect on your androgen levels.
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Without further ramblings, let’s check out this nasty food that lowers testosterone:
Licorice
Licorice is common in many European countries, it’s regularly used in tobacco, teas, sweets, and chewing gums.
Even though it tastes amazing to some people, and some alt-medicine “guru’s” claim that it would actually be super-healthy, the evidence points to one big problem.
The main compound in licorice – glycyrrhizic acid – which gives licorice root its phenomenal taste, has negative side effects and makes licorice a food that decreases testosterone.
And this reduction in testosterone (although easily reversible) is not insignificantly small either.
The negative effects of glycyrrhizic acid on T-production were first seen in this test-tube study, (410) where the researchers found out that a very modest dose of glycyrrhetinic acid (hydrogenated version of glycyrrhizic acid), was able to significantly block testosterone production in isolated rat leydig cells, through inhibiting the activity of 17β-HSD enzyme, which is needed as a catalyst in testosterone production.
11 years later, glycyrrhizic acid was tested on human subjects. In a study (411) where seven healthy male subjects were given 7g/day of licorice through a commercially available candy tablets (containing 0,5 grams of glycyrrhizic acid). Four days into the study and the subjects total testosterone levels had decreased from 740 ng/dL to 484 ng/dL.
In other words, their testosterone levels were almost half of what they were before popping the licorice pills.
Good news are that 4 days after discontinuation of the licorice-habit, their testosterone levels had returned back to baseline.
