Key points from article :
Three out of four people are unaware being overweight increases the risk of developing 10 different types of cancer.
Men and people from poor backgrounds most likely to no know.
Bowel, kidney, breast and womb cancer are most commonly linked to obesity.
Contributes to more than 18,000 cases of cancer each year in the UK.
Survey of more than 3,000 people by Cancer Research UK.
