Another massive study find that the more red meat you eat, the higher your risk of breast cancer.
“We found that women who ate the most red meat in adolescence or early adulthood had an increased risk of developing breast cancer later in life. One serving a day increment in red meat intake during adolescence was associated with a 22% higher risk of premenopausal breast cancer and each serving per day increment during early adulthood was associated with a 13% higher risk of breast cancer overall. Our analysis took into account most of the known breast cancer risk factors, and we adjusted for smoking, alcohol intake, age, hormone therapy, and oral contraceptive use. Still red meat was one the important breast cancer risk factors. If women decrease the amount of the red meat they eat—for example, having it once a week instead of twice a day—they will decrease their risk of developing breast cancer. And because red meat is not the only risk factor for risk of breast cancer, we suggest that women adopt a healthy lifestyle: drink less alcohol, don’t smoke, and get some physical activity”
Scientist Maryam S Farvid, Harvard School of Public Health, October 2014.
The study found that “Replacement of one serving/day of total red meat with one serving of combination of poultry, fish, legumes, and nuts was associated with a 15% lower risk of breast cancer overall and a 23% lower risk of premenopausal breast cancer.”
“In conclusion, higher consumption of red meat during adolescence was associated with premenopausal breast cancer. Substituting other dietary protein sources for red meat in adolescent diet may decrease premenopausal breast cancer risk.”
Study by Maryam S. Farvid, Eunyoung Cho, Wendy Y. Chen, A. Heather Eliassen and Walter C. Willett reviewing the Nurses’ Health Study II cohort of 44,231 women aged 33–52 “Adolescent meat intake and breast cancer risk” as published in the International Journal of Cancer on October 3, 2014.