Diseases, Conditions, Syndromes

Coronavirus: the importance of ventilation

Using laser light techniques, UvA physicists and medical researchers have found that small cough droplets, potentially containing virus particles, can float in the air in a room for many minutes, especially when the room ...

Vaccination

Learning from vaccination's history

With the ongoing speculation around the development of a viable COVID-19 vaccine, there's no better time to revisit the history of vaccination.

Surgery

UTSA software helps patients receive faster post-pandemic care

Many patients had to wait for lifesaving surgeries, such organ transplants, due to the heavy burden COVID-19 caused for hospitals. Now, UTSA computer science seniors have built a software program that assists doctors in prioritizing ...

Diseases, Conditions, Syndromes

US sends Brazil malaria drug unproven for COVID-19 treatment

The U.S. has sent to Brazil more than 2 million doses of a malaria drug touted by President Donald Trump as potentially protecting against and treating the coronavirus, even though scientific evidence has not backed up those ...

Diseases, Conditions, Syndromes

India announces major easing of coronavirus lockdown

India said Saturday it would begin a major relaxation of the world's biggest coronavirus lockdown from early June, even as the country saw another record rise in confirmed infections.

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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, a drug is "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/or 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 psychoactive mushrooms, blur the line between food and recreational drugs, as when ingested they affect the functioning of both mind and body and some substances normally considered drugs such as DMT (Dimethyltryptamine) are actually produced by the human body in trace amounts.

This text uses material from Wikipedia, licensed under CC BY-SA