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Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

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Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

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Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.

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People about to have surgery must tell their health care providers about all supplements they take.

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In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

El Niño and areas of high marine primary production around the Galapagos Islands. Noti El Niño and areas of high marine primary production around the Galapagos Islands. Noti
Activation of the Primary Gustatory Cortex by Taste Stimuli Activation of the Primary Gustatory Cortex by Taste Stimuli
Community colleges have opened higher education to millions of students who would not otherwise have ... Community colleges have opened higher education to millions of students who would not otherwise have ...
When checking a coil-on-plug (COP) assembly, check that the primary and secondary wiring looks ... When checking a coil-on-plug (COP) assembly, check that the primary and secondary wiring looks ...
Primary Glands of the Endocrine System Primary Glands of the Endocrine System
In oogenesis, cells enter meiosis as primary oocytes In oogenesis, cells enter meiosis as primary oocytes
Video: Chromosome structural organization/ Mechanisms for chromosome movement Animation

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