(CNN) — Past research has shown that eating a lot of red meat increases the risk of bowel cancer. Now Harvard researchers say eating red meat in early adulthood also increases a woman’s risk of breast cancer.
The scientists analyzed data from 88,803 premenopausal women. During 20 years of follow-up, the team looked at the diets of those who developed breast cancer.
The result: higher consumption of red meat was associated with a 22% increased risk of breast cancer overall. Women who ate more poultry, fish, eggs, legumes and nuts had a lower risk for breast cancer.