This review aims to summarize and assess key studies investigating the relationship
between hormonal contraception and breast cancer risk. Approximately two-thirds of breast …

The largest meta-analysis comprised a total of 54 epidemiologic studies (Collaborative
Group on Hormonal Factors in Breast Cancer) and included 53,297 women with breast …

Background Little is known about whether contemporary hormonal contraception is
associated with an increased risk of breast cancer. Methods We assessed associations …

Several factors must be taken into consideration regarding the risk of breast cancer
associated with hormonal contraceptive use. Contraceptive benefits related to preventing …

Simple Summary Breast cancer (BC) is caused by highly invasive and metastatic malignant
tumors and affects a large number of women, threatening their health and quality of life …

Most women use hormonal contraception for more than 30 years and for many, this may
involve exposure in their older reproductive years when baseline breast cancer risk rises …

Breast cancer is the most commonly occurring cancer in women, the second most frequent
cancer overall, and it causes the greatest number of cancer-related deaths among women …

Contemporary hormonal contraception formulations contain lower doses of estrogen, have
new synthetic progestin components, and provide novel methods of delivery that have not …

Abstract The Collaborative Group on Hormonal Factors in Breast Cancer has brought
together and reanalysed the worldwide epidemiological evidence on breast cancer risk and …

The possibility that the use of hormonal contraceptives may increase the risk of breast
cancer has been raised since many years. In the past this hypothesis has been dismissed …