Related topics: cancer , patients , food and drug administration
Drug
hideA drug, broadly speaking, is any substance that, when absorbed into the body of a living organism, alters normal bodily function. There is no single, precise definition, as there are different meanings in drug control law, government regulations, medicine, and colloquial usage.
In pharmacology, Dictionary.com defines a drug as "a chemical substance used in the treatment, cure, prevention, or diagnosis of disease or used to otherwise enhance physical or mental well-being." Drugs may be prescribed for a limited duration, or on a regular basis for chronic disorders.
Recreational drugs are chemical substances that affect the central nervous system, such as opioids or hallucinogens. They may be used for perceived beneficial effects on perception, consciousness, personality, and behavior. Some drugs can cause addiction and habituation.
Drugs are usually distinguished from endogenous biochemicals by being introduced from outside the organism.[citation needed] For example, insulin is a hormone that is synthesized in the body; it is called a hormone when it is synthesized by the pancreas inside the body, but if it is introduced into the body from outside, it is called a drug.[citation needed]
Many natural substances such as beers, wines, and some mushrooms, blur the line between food and drugs, as when ingested they affect the functioning of both mind and body.
For more information about Drug, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
News tagged with drug
Findings suggest cardiovascular devices often approved by FDA without high-quality studies
20 hours ago |
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Pre-market approval by the FDA of cardiovascular devices is often based on studies that lack adequate strength or may have been prone to bias, according to a study in the December 23/30 issue of JAMA. The researchers found ...
Acupuncture reduces hot flashes, improves sex drive for breast cancer patients
Dec 29, 2009 |
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Not only is acupuncture as effective as drug therapy at reducing hot flashes in breast cancer patients, it has the added benefit of potentially increasing a woman's sex drive and improving her sense of well-being, according ...
New research could advance research field critical to personalized medicine
Dec 29, 2009 |
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It's the ultimate goal in the treatment of cancer: tailoring a person's therapy based on his or her genetic makeup. While a lofty goal, scientists are steadily moving forward, rapidly exploiting new technologies. Researchers ...
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South African doctor sees drug-resistant HIV
Medicine & Health / HIV & AIDS
7 hours ago |
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(AP) -- It's 8 a.m. and Dr. Theresa Rossouw is already drowning behind a cluttered desk of handwritten HIV charts - new, perplexing cases of patients whose lifesaving drugs have turned against them.
Scientists develop technique to determine ethnic origin of stem cell lines
18 hours ago |
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An international team of scientists led by researchers at The Scripps Research Institute has developed a straightforward technique to determine the ethnic origin of stem cells.
The cancer 'TRAP'
20 hours ago |
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Current research suggests that TNF-receptor associated protein-1 (TRAP-1) may prevent cancer cell death. The related report by Leav et al, "Cytoprotective Mitochondrial Chaperone TRAP-1 as a Novel Molecular Target in Localized ...
Chlorophylls effective against aflatoxin
20 hours ago |
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A new study has found that chlorophyll and its derivative chlorophyllin are effective in limiting the absorption of aflatoxin in humans. Aflatoxin is produced by a fungus that is a contaminant of grains including corn, peanuts ...
WHO chief: swine flu pandemic continues
22 hours ago |
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(AP) -- Many more people could become sick with swine flu this winter even though it has peaked in North America and some European countries, the head of the World Health Organization said Tuesday.
Tylenol Arthritis Caplet voluntary recall expanded
23 hours ago |
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(AP) -- Johnson & Johnson is expanding a voluntary recall of Tylenol Arthritis Caplets due to consumer reports of a moldy smell that can cause nausea and sickness.
Tarantula venom-based MD therapy to be advanced by UB scientists' biotech company
Dec 29, 2009 |
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University at Buffalo biophysicists have found a protein in tarantula venom that shows promise as a potential therapy for muscular dystrophy (MD). They have formed a start-up biotech company in Buffalo -- Rose Pharmaceuticals ...
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