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Video: Weight Loss, Even Postmenopausal, Reduces Breast Cancer Risk
Weight loss, even postmenopausal, reduces breast cancer risk
Risk factors for developing breast cancer are well known in science. Overweight is one of them. But for a long time, scientists did not know if losing weight after menopause could help prevent this disease. A new study has answered this question.
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Risk factors for developing breast cancer are well known in science. Overweight is one of them. But for a long time, scientists did not know if losing weight after menopause could help prevent this disease.
A new study, published in JNCI: Journal of the National Cancer Institute, shows for the first time that weight loss is effective in preventing breast cancer, even in postmenopausal women. But the result of losing weight must be persistent.
"We found that women who lost weight and kept it stable had a lower risk of breast cancer than women who did not change weight," Professor Lauren Teras of the American Cancer Society, co-author of the study, told NBC News …
For their work, the scientists took data from 10 different studies that were conducted earlier. They analyzed information on 180,000 women over the age of 50.
Scientists were interested not only in how women lost weight, but also how long they maintained the results of weight loss. The authors also took into account other possible risk factors for cancer that could influence the onset of the disease (level of physical activity, hormonal therapy).
It turned out that in women who lost only two kilograms and could maintain this achievement, the risk of breast cancer was reduced by 13%.
The greater the weight loss, the more pronounced the effect was. But scientists said it didn't apply to women who were on hormone replacement therapy.
This study shows a link between weight loss and reduced cancer risk, but it does not prove that weight loss is the reason for this improvement. However, experts believe that scientific work gives hope to women.
“This gives us more certainty and confidence that weight loss, even after a certain age, is associated with a lower risk of cancer,” said Karen Basen-Engquist, professor at the University of Texas.