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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
Blood is approximately twice as thick as water because of the cells and other components found in it.
The longest a person has survived after a heart transplant is 24 years.
More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.
A serious new warning has been established for pregnant women against taking ACE inhibitors during pregnancy. In the study, the risk of major birth defects in children whose mothers took ACE inhibitors during the first trimester was nearly three times higher than in children whose mothers didn't take ACE inhibitors. Physicians can prescribe alternative medications for pregnant women who have symptoms of high blood pressure.