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Illness; diuretics; laxative abuse; hot weather; exercise; sweating; caffeine; alcoholic beverages; starvation diets; inadequate carbohydrate consumption; and diets high in protein, salt, or fiber can cause people to become dehydrated.

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In 2010, opiate painkllers, such as morphine, OxyContin®, and Vicodin®, were tied to almost 60% of drug overdose deaths.

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Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

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Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.

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All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

Thinning of eggshells caused by DDT. Thinning of eggshells caused by DDT.
Many human diseases are caused by mutations in single genes Many human diseases are caused by mutations in single genes
The process of placing a stent in a blood vessel. (A) A catheter is used to place a collapsed stent The process of placing a stent in a blood vessel. (A) A catheter is used to place a collapsed stent
Intussusception. The condition is caused by an infolding of the small intestine, which often causes Intussusception. The condition is caused by an infolding of the small intestine, which often causes
Atherosclerosis. Atherosclerosis.
Plaque and thrombus formation in the coronary artery Plaque and thrombus formation in the coronary artery
Video: Osteoporosis

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