Key points from article :
Losing weight may help to reduce the chances of getting breast cancer.
Overweight or obese women need to reduce weight and maintain that for at least 10 years.
Greater the reduction of weight, less the chances of getting breast cancer.
Only applicable to overweight or obese women who are not on hormone replacement therapy.
Studied over 180,000 women aged 50 and above in this observational study.
Collaborative research by 18 universities across the US, Australia and Japan, published in Journal of the National Cancer Institute.
