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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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Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).

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Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.

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The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.

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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).

Urinalysis. During a simple urinalysis, a stick with colored blocks is dipped into a urine specimen. Urinalysis. During a simple urinalysis, a stick with colored blocks is dipped into a urine specimen.
Urine Color Guide Urine Color Guide
Kidneys Kidneys
Example of equipment used for a urine drug screen that a medical office may require before ... Example of equipment used for a urine drug screen that a medical office may require before ...
Urine Color Can Signal Dehydration Urine Color Can Signal Dehydration
Antidiuretic hormone regulates water excretion from the kidneys Antidiuretic hormone regulates water excretion from the kidneys
Video: Activation Energy - Valence Electrons

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