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Medicine Facts

There's No Such Thing as a Safe Suntan

Every time you step outdoors, you are bombarded by ultraviolet (UV) radiation from the sun. UV rays cause the number of free radicals in cells to increase. Free radicals are atoms or molecules that ... Continue reading

Civets Lesson

Recently a Chinese television producer fell ill with Severe Acute Respiratory Syndrome, better known as SARS. He is the first victim in many months, although an epidemic last year claimed nearly 8000 ... Continue reading

Protozoa That Cause Disease

Diseases caused by protozoan parasites are among the leading causes of death and disease in tropical and subtropical regions of the world. Developing countries within these areas contain ... Continue reading

Malaria is caused by this protozoan parasite.

Why Is Blood Pressure Two Numbers?

Blood pressure might better be called heart pressure, for the heart's pumping action creates it. To measure blood pressure, health workers determine how hard the blood is pushing at two different ... Continue reading

Blood pressure cuff measures systolic and diastolic pressure.