In addition to smoking, scientists estimate that about a third (32%) of 13 of the most common cancers in the UK could be prevented through improved diet (including alcohol reduction), physical activity, and body weight. For example, it is estimated that 47% of colorectal cancer and 38% of breast cancer can be prevented through a healthy lifestyle. Maintaining a healthy weight (through active living and appropriate diet) could result in as much as 22,000 less cancer deaths per year in the UK.