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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.
Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).