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Over time, chronic hepatitis B virus and hepatitis C virus infections can progress to advanced liver disease, liver failure, and hepatocellular carcinoma. Unlike other forms, more than 80% of hepatitis C infections become chronic and lead to liver disease. When combined with hepatitis B, hepatitis C now accounts for 75% percent of all cases of liver disease around the world. Liver failure caused by hepatitis C is now leading cause of liver transplants in the United States.
There are 60,000 miles of blood vessels in every adult human.
There are approximately 3 million unintended pregnancies in the United States each year.
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
There are more nerve cells in one human brain than there are stars in the Milky Way.