Postmenopausal women who consume two or more alcoholic drinks per day may double their risk of endometrial cancer, according to new US research.
The study followed 41,574 postmenopausal African-American, Japanese-American, Latina, Native-Hawaiian and white women for an average of eight years using questionnaires.
Previous studies had shown that drinking alcohol increases levels of oestrogen in postmenopausal women.
Veronica Wendy Setiawan, assistant professor of preventive medicine at the University of Southern California, said: "It's important for women, especially postmenopausal women, to know and understand the consequences of high alcohol consumption.
"It does not affect just the liver, but alcohol has been associated with breast cancer and now endometrial cancer."
The paper's authors added that their findings were "preliminary".
The link between alcohol intake and endometrial cancer is stronger for slim women than for overweight or obese postmenopausal women, the researchers determined.
The study will appear in the International Journal of Cancer.