Breast cancer: how much does late delivery increase the risk

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According to WHO, breast cancer accounts for 16% of all cancers and is the most common type of cancer among women.

Late birth and childfree

In the 1970s, the incidence of breast cancer increased dramatically. Doctors explain this by the deterioration of the environment and the possibility of detecting cancer at an earlier stage. By this time, the lifestyle of the population of developed countries had also changed dramatically: there were fewer children in families and the duration of breastfeeding was reduced. Increasingly, the planning of children began to be accompanied by medical support using hormones. It is not surprising that such stimulation, in combination with heredity, can lead to the formation of a malignant tumor in the mammary gland, says a mammologist. Alla Kartasheva.

According to studies, if we take as an ideal situation a woman without a burdened heredity who gave birth at 20 or earlier, then with childbirth at 20-24 years the risk of developing breast cancer increases by 1.2 times, with childbirth at 25-29 or no childbirth at all – 1.5 times, and during pregnancy after 30 years – 1.9 times.

Early childbirth is not a panacea

However, for women who have several close relatives with breast cancer, the danger is not late, but early childbirth, draws attention Sergey Portnoy. In this group of women, early childbirth stimulates early breast cancer. So, if a woman has two or more relatives with diagnosed breast cancer, then during childbirth before the age of 20, the risk of developing breast cancer is 6.8 times higher than in women without aggravated heredity. However, if such a woman postpones childbirth until 30 years of age and later, then this figure decreases – the risk decreases from 6.8 times to 4.2 times, cites research data. Sergey Portnoy.

Postponing pregnancy: how to protect yourself from breast cancer

– Once a year (and preferably once every six months) all women from 18 to 35-40 years old need to do Ultrasound of the mammary glands.
– After the age of 40, it is necessary to perform mammography in addition to ultrasound research (at least once every 1.5–2 years). – In addition, once a year you need visit a gynecologist and mammologist – this should become a habitual annual physical examination for any healthy woman who is not worried about anything. And with any complaints, you need to see a doctor all the more.

The most dangerous thing for the mammary gland is a sharp hormonal failure with the release of sex hormones or stress hormones, notes Alla Kartasheva: “Abortion is also included in the category of these factors. In this regard, together with a gynecologist-endocrinologist and a mammologist, it is necessary to choose the best method of contraception, with the least risk for a woman, up to ligation or intersection of the fallopian tubes, if the woman does not plan children at all.

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