Cancer: This can happen when normal cells become cancerous and then they multiply and spread this is an abnormal cell growth.

Chronic lung disease: can be caused by by smoking breathing chemicals dust pollen, lungs get messed up and become worse and ca n lose there function.

Stroke: when blood flow is blocked from going to the brain , heart disease can also cause these can increase the rate of stroke.

Alzheimer's disease: A disorder caused by age this deletes memory.

Diabetes: A disease that occurs when the pancreas can not produce insulin.

Modifiable risk factors you can change they include high cholesterol,high blood pressure,smoking,diabetes,obesity,physical activity and poor nutrition.