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The average older adult in the United States takes five prescription drugs per day. Half of these drugs contain a sedative. Alcohol should therefore be avoided by most senior citizens because of the dangerous interactions between alcohol and sedatives.

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A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.

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Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

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Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).

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The FDA recognizes 118 routes of administration.

Primary production is constrained by the most limiting factor. Primary production is constrained by the most limiting factor.
Kitagawa Utamaro, Utamaro's Studio, Eshi . . . dosa-hiki (the three primary steps in producing ... Kitagawa Utamaro, Utamaro's Studio, Eshi . . . dosa-hiki (the three primary steps in producing ...
The locations of human primary somatosensory cortex (SI) and one area of secondary somatosensory ... The locations of human primary somatosensory cortex (SI) and one area of secondary somatosensory ...
Primary steps in fibrinolysis Primary steps in fibrinolysis
Primary factors affecting blood pressure Primary factors affecting blood pressure
A late stage in mitosis after the chromosomes (stained blue) have separated A late stage in mitosis after the chromosomes (stained blue) have separated
Video: Hyperglycemia Animation

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