Hormonal birth control leads to increased risk of breast cancer, study finds

Hormonal birth control leads to increased risk of breast cancer, study finds

According to this study of 10,000 women, under the age of 50, who developed breast cancer between 1996 and 2017 in the UK, the increased risk of developing breast cancer is 20-30%.

One side effect among many others. According to a study published in the scientific journal PLOS medicineall forms of hormonal birth control carry a slightly increased risk of breast cancer in women, as evidenced in theFrench media agency.

This study was conducted on 10,000 women, under the age of 50, who developed breast cancer between 1996 and 2017 in the UK, where progestogen-only contraceptives are now as common as combined progestogen and contraceptives. estrogen.

A risk of 20 to 30%

The risk of developing breast cancer is between 20% and 30%, regardless of the mode of administration (pill, IUD, implant, or injection) or the formula used (estrogen-progestogen or progestogen-only).

However, the poll released on March 21 reveals it however, this small increase in breast cancer risk needs to be scaled down in light of the benefits of contraception, including the protection it provides against other types of cancersay the researchers.

Read also: What can we expect when we stop taking the pill?

To arrive at these conclusions, the researchers calculated the number of additional cases of breast cancer caused by hormonal contraception, knowing that the risk of developing this disease increases with age.

If contraception is taken for five years between the ages of 16 and 20, eight out of 100,000 women develop breast cancer. Taken between the ages of 35 and 39, this represents 265 additional cases of breast cancer per 100,000 women.

Like others before it, the study bears this out the increase in breast cancer risk associated with hormonal contraception is transient : decreases in the years following the cessation of contraception.

Source: Madmoizelle

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