It turns out it depends on your race, the amount of caffeine, and the source of the caffeine, oddly enough.
NIH Study shows caffeine consumption linked to estrogen changes
(
https://www.nih.gov/news-events/news-releases/nih-study-shows-caffeine-consumption-linked-estrogen-changes)
Moderate caffeine intake associated with higher level for Asians, lower for whites.
Asian women who consumed an average of 200 milligrams or more of caffeine a day — the equivalent of roughly two cups of coffee — had elevated estrogen levels when compared to women who consumed less, according to a study of reproductive age women by researchers at the National Institutes of Health and other institutions.
However, white women who consumed 200 milligrams or more of caffeine a day had slightly lower estrogen levels than women who consumed less. Black women who consumed 200 milligrams or more of caffeine a day were found to have elevated estrogen levels, but this result was not statistically significant.
Total caffeine intake was calculated from any of the following sources: coffee, black tea, green tea, and caffeinated soda.
Findings differed slightly when the source of caffeine was considered singly. Consuming 200 milligrams or more of caffeine from coffee mirrored the findings for overall caffeine consumption, with Asians having elevated estrogen levels, whites having lower estrogen levels, and the results for blacks not statistically significant.
However, consumption of more than one cup each day of caffeinated soda or green tea was associated with a higher estrogen level in Asians, whites, and blacks.I guess the moral of the story for white chicks, Angélique, is don't drink a lot of coffee. (BTW, you have the prettiest name!)
~Terri
