A study published in the June 2021 issue of Cancer Discovery sheds new light on how eating red meat may promote the growth of colorectal cancers. Several risk factors have been established for colorectal carcinoma (CRC), yet their direct mutagenic effects in patients’ tumors remain to be elucidated. They leveraged whole-exome sequencing data from 900 CRC cases that had occurred in three US-wide prospective studies with extensive dietary and lifestyle information. They found