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Evaluating a new way to open clogged arteries

Over the past few decades, scientists have developed many devices that can reopen clogged arteries, including angioplasty balloons and metallic stents. While generally effective, each of these treatments ...

Cardiology created 1 hour ago | popularity not rated yet | comments 0 | with audio podcast

The compound in the Mediterranean diet that makes cancer cells 'mortal'

New research suggests that a compound abundant in the Mediterranean diet takes away cancer cells' "superpower" to escape death. By altering a very specific step in gene regulation, this compound essentially re-educates cancer ...

Cancer created 17 hours ago | popularity 4.8 / 5 (13) | comments 3 | with audio podcast

Bed sharing with parents increases risk of cot death fivefold

Bed sharing with parents is linked to a fivefold increased risk of sudden infant death syndrome (SIDS), even when the parents are non-smokers and the mother has not been drinking alcohol and does not use illegal drugs, according ...

Health created 14 hours ago | popularity 1.3 / 5 (3) | comments 0

Breakup of physician, drug company relationship could improve health care, cut cost

A new report suggests that improved health care and significant reductions in drug costs might be attained by breaking up the age-old relationship between physicians and drug company representatives who promote the newest, ...

Medications created 20 hours ago | popularity 5 / 5 (1) | comments 0

Anabolic steroids may affect future mental health

There is a link between use of anabolic-androgenic steroids and reduced mental health later in life. This is the main conclusion of a new study on elite male strength athletes that researchers from the University of Gothenburg ...

Psychology & Psychiatry created 22 hours ago | popularity 3 / 5 (1) | comments 1

One in ten teens using 'study drugs,' but parents aren't paying attention

As high schoolers prepare for final exams, teens nationwide may be tempted to use a "study drug"—a prescription stimulant or amphetamine—to gain an academic edge. But a new University of Michigan poll shows only one in ...

Health created 19 hours ago | popularity not rated yet | comments 0

FDA has safety concerns on Merck insomnia drug

Federal health regulators say an experimental insomnia drug from Merck can help patients fall asleep, but it also carries worrisome side effects, including daytime drowsiness and suicidal thinking.

Medications created 21 hours ago | popularity not rated yet | comments 0

Pharmaceutical advances offer new options for health outcomes

Research presented at Digestive Disease Week (DDW) explores pharmaceutical advances for treating irritable bowel syndrome with diarrhea (IBS-D) and hepatitis C.

Diseases, Conditions, Syndromes created 23 hours ago | popularity not rated yet | comments 0

AIDS science at 30: 'Cure' now part of lexicon

Big names in medicine are set to give an upbeat assessment of the war on AIDS on Tuesday, 30 years after French researchers identified the virus that causes the disease.

HIV & AIDS created May 18, 2013 | popularity 5 / 5 (2) | comments 0

Consumer group flags high SPF ratings on sunscreen

(AP)—Sunbathers this summer will find new sunscreen labels that are designed to make the products more effective and easier to use.

Health created May 20, 2013 | popularity not rated yet | comments 0

Deep brain stimulation: A fix when the drugs don't work

Neurological disorders can have a devastating impact on the lives of sufferers and their families.

Neuroscience created May 17, 2013 | popularity 5 / 5 (1) | comments 0 | with audio podcast

Awakening to new drugs against sleeping sickness

Sleeping sickness kills tens of thousands of people in Africa each year. Current chemotherapies are subject to various limitations, including resistance. Rhodesain, an enzyme of the parasites that cause this ...

Cancer created May 17, 2013 | popularity 4 / 5 (1) | comments 1 | with audio podcast

New protein-targeting drug shows promise in early trial for patients with high-risk CLL

A new oral targeted drug, idelalisib (GS-1101), has the potential to stave off the need for additional treatments for relapsed or treatment-resistant chronic lymphocytic leukemia (CLL), according to a study led in part by ...

Cancer created May 17, 2013 | popularity not rated yet | comments 0 | with audio podcast

One in five U.S. kids has a mental health disorder, CDC reports

(HealthDay)—As many as one in five American children under the age of 17 has a diagnosable mental disorder in a given year, according to a new federal report.

Psychology & Psychiatry created May 16, 2013 | popularity 2.7 / 5 (6) | comments 1 | with audio podcast

No idle chatter: Study finds malaria parasites 'talk' to each other

Melbourne scientists have made the surprise discovery that malaria parasites can 'talk' to each other – a social behaviour to ensure the parasite's survival and improve its chances of being transmitted ...

Medical research created May 15, 2013 | popularity not rated yet | comments 0 | with audio podcast

Drug

A 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.