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Did you know?
Blood is approximately twice as thick as water because of the cells and other components found in it.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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Asthma attacks and symptoms usually get started by specific triggers (such as viruses, allergies, gases, and air particles). You should talk to your doctor about these triggers and find ways to avoid or get rid of them.
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Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.
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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.