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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

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Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.

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Excessive alcohol use costs the country approximately $235 billion every year.

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Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.

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Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

Like most world-changing inventions, the printing press of fifteenth-century Europe took advantage o Like most world-changing inventions, the printing press of fifteenth-century Europe took advantage o
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