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In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.
There are 60,000 miles of blood vessels in every adult human.
Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.
The familiar sounds of your heart are made by the heart's valves as they open and close.
According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.