If you’re one of the tens of thousands of women taking tamoxifen to prevent new breast cancer or a recurrence, listen up: it may not be doing you a bit of good.
Tamoxifen has been the gold standard of breast cancer treatment for over 30 years; reportedly, it’s the world’s most widely prescribed breast cancer drug. Effective for women with hormone-receptive cancer—up to about 75% of all women with breast cancer—it’s been shown to reduce a woman’s risk of recurrence by 40%, and her...

