significant inverse association between substitution of poultry for pork lamb [adjust IRR per 25 g/d = 0.79 (95% CI: 0.64-0.98)] Among red meat types, substition of pork for beef was associated with a significantly higher risk for rectal cancer [adjust IRR per 25 g/d = 1.43 (95% CI: 1.11-1.84)]