Lose weight. Obesity causes 20% of all cancers.
Eat well. Improvement in diet could reduce cancer incidence by 50%
Exercise. Increases in physical activity could reduce cancer incidence by as much as 85% in 5 to 20 years.
Eradicating the main viruses associated with cancer worldwide which include human papillomavirus and hepatitis B and C could lead to a 100% reduction in viral-related cancer incidence in 20 to 40 years.
Screening for colorectal cancer can reduce mortality by 30% to 40%.
Epidemiologists have shown thirty years ago that tobacco, alcohol, diet, lack of physical activity, and obesity accounted for more than half of all cancer.