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美国乔治敦大学医学会肿瘤专家研究认为,妇女怀孕期间如果体重增加超过38磅(约合17千克),更年期患乳腺癌的几率将增加40%;如果增加48.4磅(约合22千克)以上,患乳腺癌几率将增加3倍。美国医学专家发表的一份研究报告称,研究人员对2万多名芬兰妇女所作的追踪调查发现,孕妇体重过重只会对更年期后患乳腺癌的几率有影响,而在更年期之前患乳腺癌的几率不会增加。研究显示,孕妇在怀孕期间体内雌激素会增加,雌激素在脂肪组织中代谢并转化为活性激素成分,从而影响肿瘤细胞的发生与生长。专家建议,孕妇要适当做体育运动,更要注意营养过剩的问题。而孕妇在怀孕期间体重增加的理想范围是25磅到35磅(约合11.3～15.9千克)。
Genetics University Cancer Society oncology experts believe that if a woman’s weight gain during pregnancy more than 38 pounds (about 17 kg), menopause, the risk of breast cancer will increase by 40%; if the increase of 48.4 pounds (about 22 kg) or more, The risk of breast cancer will increase 3 times. A study published by medical experts in the United States said that a follow-up survey of more than 20,000 Finnish women found that overweight pregnant women only affected the risk of breast cancer after menopause and breast cancer before menopause Chance will not increase. Studies have shown that during pregnancy pregnant women will increase estrogen, estrogen metabolism in adipose tissue and converted into active hormone components, thus affecting the occurrence and growth of tumor cells. Experts suggest that pregnant women should do appropriate exercise, but also pay attention to the problem of excess nutrients. The ideal range for pregnant women to gain weight during pregnancy is 25 pounds to 35 pounds (about 11.3 to 15.9 kg).