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Women who give birth to 10 or more children may have a reduced danger of cancer , a newfangled study from Finland advise .
research worker examine cancer peril in nearly 5,000 Finish woman who gave parturition at least 10 metre before 2010 .
Over a three - tenner period , there were 656 fount of cancer in these cleaning woman , about 200 few cases than would be expect based on cancer rate in the general Finnish universe , the subject area find . [ Blossoming Body : 8 Odd Changes That Happen During Pregnancy ]
In fact , the rate of newfangled cancer case was 24 percent lower among woman who cede 10 or more babies compared to those in the universal population , the researchers said .
This overall reduction in cancer risk of exposure come mainly from minify rates of bosom cancer and gynecological cancers , include ovarian andendometrial cancer(cancer of the uterus lining ) . For these cancer , the pace of new cancer case was about 50 pct lower in women with 10 or more deliveries , compared to the general universe .
The researcher are n’t certain whether the findings go for to women who have just one , two or three children , but plan to impart another subject to regain out , said study researcher Dr. Juha Tapanainen , of the Department of Obstetrics and Gynecology at Helsinki University Central Hospital .
maternity and cancer risk
In the study , women who had 10 or more babies were about five years younger when they gave birth to their first child , compared to average out Finnish women . It ’s known that becoming pregnant at a vernal eld help protect againstbreast cancer , Tapanainen said .
char who give nascency before long time 20 have about half the peril of knocker cancer as those who give birth for the first prison term after historic period 30 , according to the National Institutes of Health . Some researchers theorize that this is because pregnancy speeds up the cognitive process of tit cell growing , and that mature prison cell are more resistant to cancer , Tapanainen say . So , cleaning woman who have children at untried age develop ripe , cancer - resistant boob cadre sooner .
Previous studies have also found that giving giving birth to at least five children reduces the peril of breast malignant neoplastic disease . This may be because gestation stanch the menstrual cycle , so the breast prison cell of charwoman who have many pregnancies are peril to lessestrogen , according to the American Cancer Society . ( vulnerability to estrogen is thought to increase the peril of breast cancer . )
The halting of ovulation , and the hormone change that time period in animation cause , may also play a character in the reduced peril of ovarian and endometrial cancers .
Many women in the novel discipline who had 10 or more children were members of the Laestadian movement , which is part of the Lutheran Church in Finland , the researchers say . Women in this chemical group are like to average out Finnish women in term of their life-style , but their religion prohibits the use of contraceptives .
field of study on the effect ofhormonal contraceptiveson cancer risk have been inconclusive , but some studies suggest that the contraceptives reduce the risk of ovarian and endometrial Crab . Thus , it ’s potential that if Laestadian women in the sketch also take contraceptives , and still had multiple pregnancies , it would even further foreshorten their peril of these Cancer , Tapanainen said .
peril of many pregnancies
The written report further linked having 10 infant with a lose weight risk of basal cellular phone skin cancer , and an increase risk of thyroid Crab . But the investigator do n’t get it on the intellect for this link .
Researchers observe that women who are able to have 10 or more children are likely levelheaded than women in the cosmopolitan universe . But this gene alone is unlikely to explicate the data link between having 10 child and the reduced jeopardy of these Crab , Tapanainen said .
In universal , the finding advise that having more children does n’t result in an increased occurrence of cancer , Tapanainen enjoin . The protective essence is seen after five births , and is even smashing with 10 births , Tapanainen said .
Despite the reduced peril of malignant neoplastic disease , giving birth to five or more child does come with its own danger , increasing the hazard of gestation knottiness , such as previous birth and hemorrhaging after pitch .
