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February 6, 2012
Caffeine is one of the most common stimulants which we usually consume in quite great doses when we drink coffee or tea. It turned out that a regular consumption of caffeine can impact estrogen levels in modern women. Female hormone estrogen is the main hormone responsible for reproduction function, menstruation regularity and sex drive of all women. According to the findings of the experts at the Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), a regular consumption of caffeine is linked to certain changes in estrogen levels, and such factor as a population group that a woman belongs to plays a great role.
About 250 female participants aged between 18 and 44 were invited to take part in the study that started in 2005 and went on for several years. This very research was aimed to continue the experiments and discover whether caffeine consumption in women affects menstrual cycle as it had been discovered before in lab rats and other animals. 
Thus, 250 Asian and Caucasian female participants were offered to consume caffeine on a daily basis from such sources as green tea, black tea, coffee and special caffeinated soda.
As the results of the measurements came up, the experts could see that Caucasian women who consumed 2 cups of coffee a day had a little lower levels of female hormone estrogen compared to normal levels of this hormone in Caucasian women. Asian women who consumed 2 cups of coffee a day had, on the contrary, increased levels of female hormone estrogen compared to those women of the same race who consumed less caffeine every day. However, there were no substantial impact of increased caffeine consumption detected on menstrual cycle, ovulation, and other related factors in women.
Dr. Enrique Schisterman, a specialist from the division of epidemiology, statistics and prevention research in NICHD and one of the study leaders, commented on the findings of the research as the following: “Short term, these variations in estrogen levels among different groups do not appear to have any pronounced effects. We know that variations in estrogen level are tied with such disorders as endometriosis, osteoporosis, and endometrial, breast, and ovarian cancers.” Those who are interested and want to read more about the effects of increased caffeine consumption on women of various origin can check out the report about the findings of this study in one of the latest issues of the American Journal of Clinical Nutrition.
Author Info: Hi! My name is Carla and I am a 5th year medical student at HYMS. I am interested in alternative medicine and I have done months researching the topic of herbal medicine. Besides, I like interviewing people and learning more about their experiences with one or another type of herbal treatments. I am willing to contribute to this site with my knowledge, and I would be happy to help you out to the best of my ability with any specific questions or problems related to alternative medicine.
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