The heavier they were when the disease was diagnosed, the poorer were their chances. But weight did not affect the survival rate of pre-menopausal women. Professor Gordon McVie, director general of the Cancer Research Campaign, which helped conduct the study, said: "Clearly post-menopausal women who are fat have higher levels of circulating oestrogens, which is believed to promote the growth of breast tumours.
"It seems highly probable that, for post-menopausal women, increased body fat leads to increased levels of the hormone oestrogen and, therefore, an increased risk of dangerous cancers."Reuse content