A US prospective cohort study found that while eating more red meat is associated with a greater risk of developing invasive breast cancer, eating more poultry is linked to a lower risk. The study enrolled 42,012 participants from 2003 to 2009 with a mean follow up of 7.6 years. A total of 1,536 invasive breast cancers were diagnosed at least 1 year after enrollment. Increasing consumption of red meat was associated with increased risk of invasive breast cancer (HRhighest vs. lowest quartile:1.23). Conversely, increasing consumption of poultry was associated with decreased invasive breast cancer risk (HR highest vs. lowest quartile: 0.85). In a substitution model with combined red meat and poultry consumption held constant, substituting poultry for red meat was associated with decreased invasive breast cancer risk (HR highest vs. lowest quartile of poultry consumption: 0.72). The findings are consistent with previous studies. Red meat has been identified as a probable carcinogen in addition to other adverse effects on health. Source: https://onlinelibrary.wiley.com/doi/full/10.1002/ijc
