A pocket-size device under development could soon help monitor how well breast cancer treatments are working and help assess breast cancer risk by measuring levels of the hormone estrogen.

For postmenopausal women with breast cancer, treatment with the drug letrozole (Femara) increases survival after surgery more than the widely used tamoxifen, a new study confirms.

It's nearly as accurate a surgical method, with fewer complications, analysis finds

But the bump in odds is small and shouldn't worry most users, researcher says

Stressful life, early delivery also rank as concerns in pregnancy, survey finds

Racial disparities seen for 'standard-of-care' breast cancer treatment, study finds

Studies also report on statin dosages and lifestyle factors that affect the heart