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Does garlic increase fertility?

Garlic is a powerful ingredient that has been linked to many potential health benefits. According to some human and animal studies, it may improve sexual function by increasing blood flow and enhancing fertility, especially in men.

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Garlic is a popular ingredient that has been linked to a long list of health benefits. According to some studies, garlic could help fight inflammation, reduce cholesterol levels, and protect against chronic disease ( 1 ). Given its many medicinal properties, people may also wonder whether garlic can improve sexual function or increase libido. This article looks at the evidence to determine whether garlic can increase your sex drive. Share on Pinterest Maria Botina/EyeEm/Getty Images May improve blood flow Some research suggests that garlic may help increase blood flow, which may be beneficial for treating issues like erectile dysfunction in men. In fact, multiple human and animal studies have found that certain compounds found in garlic can increase blood flow and improve blood vessel function ( 2 , 3 , 4 ). What’s more, one study among 49 older men found that a medication containing ingredients like aged garlic extract, ginseng, and velvet antler improved erectile function ( 5 ). Garlic can also increase nitric oxide levels, a compound that helps blood vessels dilate to promote better blood flow. This could potentially help improve erectile function ( 6 , 7 , 8 ). However, more human studies are needed to evaluate the effects of garlic on erectile dysfunction specifically. summary Garlic may help improve blood flow, which could help prevent erectile dysfunction. However, more human research is needed. May enhance male fertility In addition to increasing blood flow, some studies have found that garlic may help promote male fertility. One review of 18 studies concluded that garlic helped boost sperm production and increase levels of testosterone, which may be due to its antioxidant properties (9). In a recent animal study, S-allyl cysteine, a compound found in garlic, increased testosterone production in mice ( 10 ). Another animal study also showed that aged garlic extract could protect against changes in sperm production and testosterone levels caused by chemotherapy ( 11 ). Still, further research is needed to determine how garlic may affect male fertility and testosterone levels in humans. summary Although studies in humans are limited, some research shows that garlic and its components could improve male fertility, enhance testosterone levels, and increase sperm production. Acts as an antioxidant Antioxidants can not only help protect against chronic disease but also may play a key role in sexual health and fertility. Fresh garlic and aged garlic extract are rich in antioxidants and can help neutralize harmful compounds known as free radicals ( 12 ). According to one study among 100 men with infertility, taking an antioxidant supplement increased sperm count ( 13 ). Interestingly, one study in rats with diabetes found that S-allyl cysteine from garlic improved erectile function by blocking the formation of free radicals ( 14 ). However, additional studies are needed to understand how the antioxidants in garlic may affect sexual function and fertility in humans. summary Garlic is a good source of antioxidants, which may improve sexual health and fertility.

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What is normal testosterone by age?

Age-specific middle tertile levels were 409-558 ng/dL for men 20-24 years old, 413-575 ng/dL for 25-29 years old, 359-498 ng/dL for 30-34 years old, 352-478 ng/dL for 35-39 years old, and 350-473 ng/dL for 40-44 years old.

Abstract

Purpose:

There is an age-related decline in male testosterone production. It is therefore surprising that young men are evaluated for testosterone deficiency with the same cutoff of 300 ng/dL that was developed from samples of older men. Our aim is to describe normative total testosterone levels and age-specific cutoffs for low testosterone levels in men 20 to 44 years old.

Materials and Methods:

We analyzed the 2011-2016 National Health and Nutrition Examination Surveys, which survey nationally representative samples of United States residents. Men 20 to 44 years old with testosterone levels were included. Men on hormonal medications, with a history of testicular cancer or orchiectomy, and with afternoon/evening laboratory values were excluded. We separated men into 5-year intervals and evaluated the testosterone levels of each age group, and for all men 20 to 44 years old. We used the American Urological Association definition of a “normal testosterone level” (the “middle tertile”) to calculate age-specific cutoffs for low testosterone levels.

Results:

Our final analytic cohort contained 1,486 men. Age-specific middle tertile levels were 409-558 ng/dL (20-24 years old), 413-575 ng/dL (25-29 years old), 359-498 ng/dL (30-34 years old), 352-478 ng/dL (35-39 years old), and 350-473 ng/dL (40-44 years old). Age-specific cutoffs for low testosterone levels were 409, 413, 359, 352, and 350 ng/dL, respectively.

Conclusions:

Diagnosis of testosterone deficiency has traditionally been performed in an age-indiscriminate manner. However, young men have different testosterone reference ranges than older men. Accordingly, age-specific normative values and cutoffs should be integrated into the evaluation of young men presenting with testosterone deficiency.

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