risk factors for non-communicable diseases

• risk factors are thing that are linked to an increase in the likelihood a person will devlop a certain disease in their lifetime
• risk factors are often an aspect of someones lifestyle, but may sometimes be linked to environment or substance in body
• smoking has been proven to directly cause cardiovascular disease, lung disease and lung cancer
• it is thought that obesity can directly cause type 2 diabetes
• drinking too much alcohol is linked to liver disease
• cancer can be directly caused by exposure to certain substances
• risk factors are identified by scientists looking for correlations in data