Home ยป Approximately what proportion of cancers in the UK is caused by dietary factors, including obesity and alcohol? Cancer MCQs Approximately what proportion of cancers in the UK is caused by dietary factors, including obesity and alcohol? January 11, 2022 4 Views Q. Approximately what proportion of cancers in the UK is caused by dietary factors, including obesity and alcohol? A. 10% B. 20% C. 30% D. 40% Answer: 30%