Caffeine consumption and estrogen changes: Moderate caffeine intake linked to higher level for Asians, lower for whites

Caffeine consumption and estrogen changes: Moderate caffeine intake linked to 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.