This study was published in the American Journal of Clinical Nutrituion 2008 May;87(5):1384-91
Study title and authors:
Carbohydrate intake, glycemic index, glycemic load, and risk of postmenopausal breast cancer in a prospective study of French women.
Lajous M, Boutron-Ruault MC, Fabre A, Clavel-Chapelon F, Romieu I.
INSERM, ERI 20, EA 4045, and Institut Gustave Roussy, Villejuif, France.
This 9 year study of 62,739 postmenopausal women investigated the relationship between carbohydrate consumption and breast cancer.
The study found:
(a) Overweight women consuming the highest amounts of rapidly absorbed carbohydrates had a 35% increased risk of breast cancer.
(b) Women with largest waist circumference consuming the highest amounts of carbohydrates had a 28% increased risk of breast cancer.
(c) Carbohydrate intake was also associated with estrogen receptor-negative breast cancer.
The study shows that rapidly absorbed carbohydrates are associated with postmenopausal breast cancer risk among overweight women and women with a large waist circumference.