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A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.
Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.
For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.
The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.
Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.
![Stand facing the side of the table and apply cross-handed stretches for the subcutaneous fascia. ...](https://biology-forums.com/gallery/32/medium_380798_22_08_17_12_32_34_3284013.jpeg)
![A. Open portable massage table on its side. B. Straighten out legs completely and check that leg ...](https://biology-forums.com/gallery/32/medium_380798_22_08_17_8_58_53_32928492.jpeg)