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Male Infertility and Melatonin

Melatonin, a hormone produced by the pineal gland in the brain, is secreted in a cyclical pattern in response to the light-dark cycle. Bright light during the day inhibits melatonin release, while darkness stimulates increased production and induces sleep. Variations in melatonin levels are closely linked with seasonal reproductive function in animals. Increasing darkness during the winter months triggers higher levels of melatonin, which are believed to play a role in inhibiting fertility.

Although humans do not display such a dramatic seasonal variation in fertility, melatonin levels are nevertheless postulated to exert a potentially significant influence on sperm production in men. One study found that compared to healthy controls, men with low sperm counts or the inability to produce sperm have significantly higher levels of melatonin. Researchers postulated that these high concentrations of melatonin may either be a secondary reaction to other hormone imbalances in the infertile men, or may be a primary mechanism that wears away the lining of sperm-carrying tubules in the testes.1

Another study of men with reduced ability to produce sperm found that melatonin levels were higher in their semen samples and were associated with decreased sperm progression.2 In a recent article entitled "Melatonin-dependent infertility",a Finnish researcher suggests that melatonin may play an essential role in sperm formation, and that bright light therapy to suppress melatonin concentration may be a helpful treatment for infertile males and females who exhibit melatonin imbalances.3

The Comprehensive Melatonin Profile evaluates melatonin activity over the complete light-dark cycle, providing a circadian analysis that can uncover imbalances linked to male infertility.

References

1 Karasek M, Pawlikowski M, Nowlakowska-Jankiewicz B, Kolodziej-Maciejewska H, Zieleniewski J, Cieslak D, Leidenberger F. Circadian variations in plasma melatonin, FSH, LH, and prolactin and testosterone levels in infertile men. Pineal Res 1990;9(2):149-57.

2 Yie SM, Daya S, Brown GM, Deys L, YoungLai EV. Melatonin and aromatase stimulating activity of human seminal plasma. Andrologia 1991 May-Jun;23(3):227-31.

3 Partonen T. Melatonin-dependent infertility. Med Hypotheses 1999 Mar;52(3):269-7.

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Teresa Rispoli has her Ph.D. in Nutrition, is a licensed Acupuncturist and clinical researcher. She has been in practice for well over 25 years. It is through her clinical practice that she has gained insights into chronic health conditions. If you are suffering from unexplained symptoms that come and go you owe it to yourself to find out why. Find out today call for a Nutritional Consultation with Dr. Rispoli.

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Teresa Rispoli has her Ph.D. in Nutrition, is a licensed Acupuncturist, Master Herbalist, Certified Functional Nutritionist, has a Doctorate in Naturopathy and is a clinical researcher, and Licensed Esthetician. She has been in practice for well over 27 years. It is through her clinical practice that she has gained insights into chronic health conditions. If you are suffering from unexplained symptoms that come and go you owe it to yourself to find out why. Find out today call for a Nutritional Consultation with Dr. Rispoli.

If you are suffering from unexplained symptoms yourself to find out why. Find out today call for a Nutritional Consultation with Dr. Rispoli.

Remember that the body can heal itself if given the proper nutrients with the right environment and lifestyle.

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