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Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.
On average, the stomach produces 2 L of hydrochloric acid per day.
This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
The longest a person has survived after a heart transplant is 24 years.
People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.