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Did you know?

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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Vaccines prevent between 2.5 and 4 million deaths every year.

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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

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Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.

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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.

Generalized body plan of a bony fish Generalized body plan of a bony fish
(A) Normal spongy bone. (B) Spongy bone with osteoporosis, which is characterized by a loss of bone (A) Normal spongy bone. (B) Spongy bone with osteoporosis, which is characterized by a loss of bone
EEG recordings showing the differences between normal, absence seizure, and generalized tonic–clonic EEG recordings showing the differences between normal, absence seizure, and generalized tonic–clonic
NANDA international nursing diagnosis 1 NANDA international nursing diagnosis 1
Eating calcium-rich foods daily assists with bone health, muscle contraction, and blood clotting Eating calcium-rich foods daily assists with bone health, muscle contraction, and blood clotting
Relative levels of neuronal loss in HD transgenic mice Relative levels of neuronal loss in HD transgenic mice
Video: Junction Types - Tight and Adherens Junctions

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