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# Some hypertension medications linked to breast cancer
- URL: https://www.foodconsumer.org/hypertension_medications_linked_to_breast_cancer_1217121023/
- Published: 2012-12-17T23:22:00.000Z
- Updated: 2026-09-22T16:15:31.000Z
- Description: A Cancer Causes and Control study of 3,201 women aged 65 and older found those who had used calcium channel blockers within the past two years faced a 1.6-fold higher risk of breast cancer, and users of immediate-release versions 2.4-fold. Researchers urge caution given the small sample.
- Author: Food Consumer
- Tags: Drug, Health News, #vivvo-import

By David Liu, PHD

Monday Dec 17, 2012 (foodconsumer.org) -- Taking certain hypertension medications may increase risk of breast cancer, according to a study in Cancer Causes and Control.

The study led by B.S. Saltzman from Fred Hutchinson Cancer Research Center in Seattle Washington and colleagues found use of hypertension medications called calcium channel blockers was associated with 1.6-fold increased risk of breast cancer.

The study was based on data from 3,201 women aged 65 years or older at baseline among whom 188 cases of breast cancer were diagnosed during a 12-year follow-up and 75 cases identified during a five-year follow-up.

Compared with women who did not use hypertension medications, women who had used calcium channel blockers within the past two years were at a 1.6-fold increased risk of breast cancer.

In particular, recent users of immediate-release calcium channel blockers were at a 2.4-fold increased risk of breast cancer.

Other hypertension medications were not found associated with breast cancer risk.

"While the observed association between immediate-release CCBs (calcium channel blockers) and breast cancer risk is based on a small sample size and needs to be interpreted cautiously, this result is consistent with others in the literature," the researchers concluded.