In women, testosterone is produced through ovaries and adrenal glands, and is known to decrease in production as women age or experience menopause. Testosterone in women can support muscle mass, bone strength, cognitive function and also help battle diseases such as Alzheimer’s.

Previously, lack of estrogen had been known to play a vital role in the development of breast cancer. Until now, scientists had been unaware of how testosterone impacted breast cancer. In a recent study, scientists measured testosterone levels in breast cancer patients based on saliva samples. It was found that women with breast cancer had testosterone levels that were significantly lower than those in women without breast cancer.

To read the full study, please visit: Breast cancer patients exhibit low testosterone levels