การกินแซนด์วิชเบคอนหนึ่งชิ้น = สูบบุหรี่สี่มวน

Original review summary

The review explains that IARC’s Group 1 classification reflects strength of evidence that something can cause cancer, not the size of its risk. It says the direct comparison is misleading: processed meat is associated with a smaller increase in colorectal-cancer risk, while smoking poses much greater health risks.[S1]