Plasma n-3 polyunsaturated fatty acid levels and colorectal cancer risk in the UK Biobank: Evidence of non-linearity, as well as tumour site- and sex-specificity

The relationship between n-3 polyunsaturated fatty acid (PUFA) intake and colorectal cancer (CRC) risk is unclear. Blood n-3 PUFA concentration is a biomarker of dietary n-3 PUFA intake. We examined the relationship between plasma n-3 PUFA concentrations and CRC risk in UK Biobank (UKBB) participants.