Truth #19: Hormone replacement therapy (HRT) increases your risk of breast cancer.

TRUE. According to the Women’s Health Initiative (WHI) Postmenopausal Hormone Therapy Trials, an estrogen-plus-progestin replacement therapy increases the risk of breast cancer, along with heart disease, stroke and blood clots.

The WHI clinical trials, launched in 1991, studied a group of 161,808 generally healthy postmenopausal women for the effects of HRT, diet modification and calcium and vitamin D supplement use on heart disease, fractures, and breast and colorectal cancer. Results from the trial on HRT, published in 2002, found that while the estrogen-only replacement therapy did not increase breast cancer risk, the risks far outweighed the benefits in the estrogen-plus-progestin study. Overall, there was a 24% increase in the risk for breast cancer due to estrogen-plus-progestin.

 
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Learn more about this type of scientific study and NBCC's involvement in clinical trials by reading about NBCC’s Clinical Trials Initiative.

 

31 Myths and Truths about Breast Cancer

1
Myth #1: Monthly breast self exams save lives
2
Myth #2: Mammograms can only help and not harm you
3
Myth #3: MRI is better than mammography because it finds more cancer
4
Truth #4: When breast cancer shows up on a mammogram, it may have been in your body for 6-10 years
5
Truth #5: Breast cancer mortality rates are declining
6
Myth #6: Mammograms prevent breast cancer
7
Truth #7: We don’t know how to prevent breast cancer
8
Myth #8: Most women with breast cancer have a family history of the disease
9
Myth #9: Men don’t get breast cancer
10
Truth #10: Risk of breast cancer increases with age
11
Truth #11: Most people think they have a higher risk of breast cancer than they actually do
12
Myth #12: Everyone's breast cancer is the same
13
Myth #13: Everyone who has a positive BRCA 1 or BRCA 2 test result will get breast cancer
14
Truth #14: The mortality rate from breast cancer is higher for African American women than for Caucasian women
15
Myth #15: In terms of survival, removing the entire breast is better than just cutting the cancer out and getting radiation
16
Myth #16: There are drugs that can prevent breast cancer
17
Myth #17: Once diagnosed with breast cancer, it’s very important to make treatment decisions immediately
18
Myth #18: Second opinions are only for treatment options. Once I know I have breast cancer, I can get a second opinion on how to treat the disease
19
Truth #19: Hormone replacement therapy (HRT) increases your risk of breast cancer
20
Myth #20: With new treatments we can now cure breast cancer
21
Truth #21: You should question your doctor
22
Myth #22: If I am not a scientist, then I won’t be able to understand breast cancer research
23
Truth #23: Your tax dollars fund a significant amount of breast cancer research
24
Myth #24: My Senators and Members of Congress have no role in what happens in breast cancer
25
Myth #25: The media accurately reports breast cancer science
26
Myth #26: All breast cancer research is good because it moves us toward prevention and a cure
27
Myth #27: Breast cancer survivors are too close to the issue to participate in how research money is spent
28
Truth #28: Less than 3% of adult cancer patients participate in clinical trials
29
Truth #29: I can educate myself
30
Truth #30: I can influence what happens in Washington D.C. about breast cancer
31
Truth #31: I can make a difference