- Cancer: Cancer occurs when cells begin to divide uncontrollably. This can be due to mutations in genes that control cell growth and division. Cancer cells can spread to other parts of the body and can cause a variety of symptoms, depending on the type of cancer.
- Heart disease: Heart disease is a leading cause of death worldwide. It can be caused by a variety of factors, including abnormal heart cell function. For example, heart arrhythmias occur when the heart beats too fast, too slow, or irregularly. This can be caused by problems with the electrical impulses that control the heart's beating.
- Stroke: A stroke occurs when the blood supply to the brain is interrupted. This can be caused by a blood clot, a hemorrhage, or a vasospasm. Vasospasms are spasms of the blood vessels that can restrict blood flow to the brain. They can be caused by a variety of factors, including head injuries, drug use, and certain medical conditions.
- Diabetes: Diabetes is a chronic disease that affects the body's ability to produce or use insulin. Insulin is a hormone that helps glucose, or sugar, get from the blood into the cells. When blood sugar levels are too high, it can damage the blood vessels, nerves, and organs. Diabetes can lead to a variety of health problems, including heart disease, stroke, kidney disease, blindness, and amputation.
- Neurodegenerative diseases: Neurodegenerative diseases are a group of conditions that cause nerve cells to die. These diseases include Alzheimer's disease, Parkinson's disease, and multiple sclerosis. The exact causes of neurodegenerative diseases are not known, but they are thought to be caused by a combination of genetic and environmental factors.
