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Did you know?
The human body produces and destroys 15 million blood cells every second.
Did you know?
Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.
Did you know?
Illicit drug use costs the United States approximately $181 billion every year.
Did you know?
Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.

