Why Estradiol—Not “Estrogen”—Has Been Misunderstood for 25 Years: New Research Shows ItReduces Breast Cancer Risk

For more than two decades, women were told that “estrogen causes breast cancer.” This belief became deeply entrenched after early interpretations of hormone therapy studies suggested an increase in breast cancer risk. But here’s the problem: the word “estrogen” was used imprecisely, blending very different hormones into one category. In reality, there is a profound…