Here we go again, and I knew this would provoke such a reaction, because politics wants a certain outcome, just like politics did for the vaccine. Let us take all other factors out, and focus on the contraceptives themselves, as other studies do for red meat eaters, or smokers, etc.
It has been shown in many studies that YES, oral contraceptives (OC) in the articles I will now reference, DO increase a woman's risk of developing breast cancer. My father as a physician knew it years ago.
Risk by Pattern of OC Use.
Women having ever used OCs presented a 30% higher risk of developing breast cancer than never-users (Table 2) RR for breast cancer among ever-users of OCs remained significantly increased after exclusion of current/recent users from the analysis (RR = 1.2).......
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Women who had ever exclusively used progestin-only pills were not at an increased breast cancer risk, whereas those who had exclusively used combined OCs were at 30% increased risk (Table 5). In contrast, current/recent use of progestin-only pills and combined OCs entailed a similar 50–60% increased risk of breast cancer as compared with never use.
Abstract. Current use of oral contraceptives (OCs) has been reportedto increase breast cancer risk slightly. In 1991/1992, a prospective cohort study specifically designed to examine the role of hormonal contraceptives in relation to breast cancer was conducted in Norway and Sweden. This study...
aacrjournals.org
From another article
Many studies show serious adverse events associated with oral contraceptive use including venous thromboembolic disease, myocardial infarction, and stroke (8-10)
In addition to the risk of acute harms, the use of oral contraceptives may influence the risk of certain cancers (11). Oral contraceptive use may promote or initiate tumors of the breast or cervix (12-14) For breast cancer, these risks may be even greater for women at elevated risk due to family history of cancer or genetic mutation carrier status (e.g., BRCA1/2); however, results from studies are inconclusive (15-16). Oral contraceptive use has also been 17associated with a greater risk of certain clinically challenging types of breast tumors (17). Conversely, oral contraceptive use is associated with significant reductions in colorectal, endometrial, and ovarian cancers (11,18-20). A recent systematic review and meta-analysis supports a significant risk reduction for ovarian cancer incidence and mortality associated with the use of oral contraceptives (20)
Abstract. Oral contraceptives may influence the risk of certain cancers. As part of the AHRQ Evidence Report, Oral Contraceptive Use for the Primary Prevention of Ovarian Cancer, we conducted a systematic review to estimate associations between oral contraceptive use and breast, cervical...
aacrjournals.org
Currently, From UK Cancer Research:
Does taking the combined pill increase the risk of breast cancer?
Taking the combined pill will slightly increase the risk of breast cancer compared to people who are not taking it. But it’s important to remember that there are other things that have a bigger effect on breast cancer risk. For example, being overweight or obese increases the risk of breast cancer much more than taking the pill does.
When you stop taking the pill, your breast cancer risk stops increasing. About 10 years after stopping, a person’s risk is no longer affected.
The contraceptive pill slightly increases the risk of breast cancer. But it decreases the risk of ovarian cancer and womb cancer.
www.cancerresearchuk.org
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By the way, one of these studies is from a Nordic country. Nordic countries have superior data collection and statistics to others for medical purposes. Many medical doctors who do research always quote Nordic studies for their robustness. Many times Nordic countries have shown studies that, later on, are reproduced in other countries as well. The problem with other western countries is also obesity, so that it is difficult to isolate the effect of contraceptives with obesity if most of the women in the study are obese or overweight to begin with.