Irregular diet, physical inactivity, stress and pollution are leading causes of cancer, a survey by US experts found.
Researchers at Stony Brook University in New York want to check how much genetics plays a role in the development of several types of cancer to determine to what extent the risk is associated with environmental factors, the Times writes.
The outcomes demonstrated that around 90 percent of disease happens because of the negative effect of external factors of the body, rather than genetic mutations or damage.
Aside from contamination, UV radiation and stress, among the main elements are those individuals can control, for example, diet, smoking and physical movement. The results showed that healthier lifestyles reduce the risk of cancer.
The research was published in the journal Nature.
Earlier this year, the results of a study by the British Center for Cancer Research showed that healthy eating prevents cancer in 40 per cent of cases.