These factors include early onset of menstruation , late onset of menopause , and factors that may allow breast tissue to be exposed to high levels of hormones for longer periods of time, such as later age at first pregnancy and never having given birth. In addition, pregnancy and breastfeeding have direct effects on breast cells, causing them to differentiate, or mature, so they can produce milk. Some researchers hypothesize that these differentiated cells are more resistant to becoming transformed into cancer cells than cells that have not undergone differentiation 2 , 3. Some pregnancy-related factors have been associated with a reduced risk of developing breast cancer later in life. These factors include:. A few retrospective case-control studies reported in the mids suggested that induced abortion the deliberate ending of a pregnancy was associated with an increased risk of breast cancer.
Breast cancer statistics
Breast Cancer Risk in American Women - National Cancer Institute
We have created a central resources hub for Health Professionals which hosts all of our CRUK resources and further materials to help with managing the pandemic. We are updating the information as guidance changes. There is also a page specifically for patients on our about cancer hub. Incidence rates are strongly related to age for all cancers combined, with the highest incidence rates being in older people. Age-specific incidence rates rise steeply from around age
Breast Cancer Risk in American Women
Carey K. Historically, survival rates are worse for younger women when compared to older women; younger age has proven to be an independent predictor of adverse outcome in multivariate analysis. While the basic principles of chemotherapy, radiation, and surgery between younger and older women with breast cancer remain similar, endocrine therapy recommendations for pre- and postmenopausal patients have evolved quite substantially over the past 5 years. When planning local and systemic therapies for young women with breast cancer, the late effects of treatment i. Other factors important to the optimal care of young women with breast cancer include risk of premature menopause, managing the risk of future infertility, impact of therapy on sexual and psychological health, and the implications of inherited cancer syndromes, specifically BRCA1 and BRCA2.
We have created a central resources hub for Health Professionals which hosts all of our CRUK resources and further materials to help with managing the pandemic. We are updating the information as guidance changes. There is also a page specifically for patients on our about cancer hub.