Whether the increase in the intake of oral contraceptives increases the chances of breast cancer among 20-30-year-old women in Canada is a complex question that has been the subject of much research. The evidence on this topic is mixed, and there is no clear consensus among medical experts.

Some studies have found a small increase in the risk of breast cancer among women who use oral contraceptives. For example, a 2017 study published in the journal JAMA Oncology found that women who used oral contraceptives for more than 10 years had a 10% increased risk of developing breast cancer.

However, other studies have not found a link between oral contraceptive use and breast cancer risk. For example, a 2015 study published in the journal Cancer Epidemiology, Biomarkers & Prevention found that women who used oral contraceptives did not have a higher risk of developing breast cancer than women who did not use oral contraceptives.

It is important to note that the vast majority of women who use oral contraceptives will not develop breast cancer. The risk of breast cancer is increased by a number of factors, including genetics, family history, and age. Oral contraceptive use is just one small risk factor for breast cancer.

The Canadian Cancer Society states that the risk of breast cancer from using oral contraceptives is very small, and that the benefits of oral contraception (such as preventing pregnancy and reducing the risk of ovarian cancer) outweigh the risks.

The decision of whether or not to use oral contraceptives is a personal one. Women should talk to their doctor about the risks and benefits of oral contraception to decide what is best for them.

Here are some additional things to consider when making a decision about oral contraceptive use:

• Age: The risk of breast cancer from oral contraceptive use is slightly higher in younger women than in older women.
• Family history: Women with a family history of breast cancer may be at higher risk of developing breast cancer themselves.
• Genetics: There are certain genetic mutations that can increase the risk of breast cancer. Women who have tested positive for these mutations may want to talk to their doctor about other birth control options.
• Other health conditions: Oral contraceptives may not be suitable for women with certain health conditions, such as migraine headaches or blood clots.

If you are a 20-30-year-old woman in Canada and you are considering using oral contraceptives, talk to your doctor about the risks and benefits. Your doctor can help you decide if oral contraception is right for you.