![]() ![]() ![]() There is also the issue of how fluctuating hormonal balances affect women’s mental health. This may be because caffeine does not change the risk of developing breast cancer. Having conflicting reports on how caffeine affects estrogen levels in women of different races, makes it difficult for medical providers to accurately predict risk. Conversely, other studies have shown no difference. There are some studies suggesting a decreased risk of breast cancer in those who drink coffee. ![]() Meaning, the differences in estrogen level may be insignificant and random. In Black women, there was a slight rise in estrogen levels, but it wasn’t statistically significant. However, the exact reverse effect was found for white women-higher caffeine intake was associated with lower estrogen levels. One study showed that higher caffeine consumption was associated with higher estrogen levels for Asian women. Furthermore, estrogen differs in every woman and changes throughout her monthly cycle. EstrogenĬaffeine appears to affect estrogen differently in different racial groups. The potential impact varies by type of hormone. Hormone levels change with diet, exercise, sleep, stress, and supplement use. It’s possible that some other behavior or inherent trait, common in people who consume more caffeine, is responsible for the differing hormone levels. Meaning, there’s a link, but there’s no proof that caffeine causes changes in hormones. Observational studies find an association between caffeine intake and changing hormonal levels. Here’s what you need to know about caffeine and hormones. It interacts with certain prescriptions, and research shows that your cup of joe can also affect your hormones-most significantly estrogen in women. While common, this substance isn’t innocuous. It’s a standard morning routine to wake up, have a cup of coffee, then start your day. Many people use caffeine to fuel their lives. The study appears in the February issue of the American Journal of Clinical Nutrition.Share on Facebook Facebook Logo Share on Twitter Twitter Logo Share on LinkedIn LinkedIn Logo Copy URL to clipboard Share Icon URL copied to clipboard Because long term caffeine consumption has the potential to influence estrogen levels over a long period of time, it makes sense to take caffeine consumption into account when designing studies to understand these disorders." "We know that variations in estrogen level are associated with such disorders as endometriosis, osteoporosis, and endometrial, breast, and ovarian cancers. "Short term, these variations in estrogen levels among different groups do not appear to have any pronounced effects," Enrique Schisterman, PhD, of the Division of Epidemiology, Statistics and Prevention Research at the Eunice Kennedy Shriver National Institute of Child Health and Human Development, where some of the research was conducted, said in an NIH press release. And increased consumption of caffeine in the form of coffee was associated with elevated estrogen levels in Asians, decreased estrogen levels in Caucasians, and no statistically significant change in estrogen levels among African Americans. Consumption of more than one cup per day of caffeinated soda or green tea was linked to increased levels of estrogen in all participants, regardless of race or ethnic background. ![]() However, the effect of caffeine consumption on estrogen levels varied based on the source of the caffeine. African American women who consumed more than 200 milligrams of caffeine per day experienced a slight rise in estrogen levels, but the increase was not statistically significant. In the study, Asian women who consumed more than 200 milligrams of caffeine per day had increased levels of estrogen compared to those who consumed less caffeine, but Caucasian women who consumed more than 200 milligrams of caffeine per day had decreased levels of estrogen. Overall, the participants ingested an average of 90 milligrams of caffeine per day. They calculated the participants' total caffeine intake based on how much coffee, black tea, green tea, and caffeinated soda they consumed. They collected fasting blood specimens for hormonal assessment at up to eight visits per cycle and four 24-hour dietary recalls per cycle. Consuming 200 milligrams or more of caffeine per day-roughly equivalent to two cups of coffee-can either increase or decrease a woman’s estrogen level, depending on her ethnic background and the source of the caffeine, a study from the National Institutes of Health (NIH) finds.īetween 20, the researchers followed 259 premenopausal women for up to two menstrual cycles. ![]()
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