两个例子，与雌激素有关的癌症病人的忌口，选自官方网站nih

1）亚麻籽

http://www.nlm.nih.gov/medlineplus/druginfo/natural/991.html

Special precautions & warnings:

Hormone-sensitive cancers or conditions: Because flaxseed might act somewhat like the hormone estrogen, there is some concern that flaxseed might make hormone-sensitive conditions worse. Some of these conditions include breast, uterine, and ovarian cancer; endometriosis; and uterine fibroids. However, some early laboratory and animal research suggests that flaxseed might actually oppose estrogen and might be protective against hormone-dependent cancer. Still, until more is known, avoid excessive use of flaxseed if you have a hormone-sensitive condition.

2）当归

http://www.nlm.nih.gov/medlineplus/druginfo/natural/936.html

Special precautions & warnings:

Hormone-sensitive conditions such as breast cancer, uterine cancer, ovarian cancer, endometriosis, or uterine fibroids: Dong quai might act like estrogen. If you have any condition that might be made worse by exposure to estrogen, don’t use dong quai.