It doesn't look like meat consumption was mentioned anywhere.
Frequent consumption of red and processed meat is strongly linked to a higher risk of colorectal cancer, with studies showing a 30% to 40% increased risk for high consumption levels [1]. Processed meat, in particular, raises CRC risk by about 18% for every 50-gram daily portion [2].
Your ultra-endurance athletes might be convinced they need more protein in their diets and are most likely consuming large quantities of meat.
Frequent consumption of red and processed meat is strongly linked to a higher risk of colorectal cancer, with studies showing a 30% to 40% increased risk for high consumption levels [1]. Processed meat, in particular, raises CRC risk by about 18% for every 50-gram daily portion [2].
Your ultra-endurance athletes might be convinced they need more protein in their diets and are most likely consuming large quantities of meat.
1: https://pmc.ncbi.nlm.nih.gov/articles/PMC10194058/
2: https://www.umassmed.edu/news/news-archives/2015/10/umms-col...