Dismissively tossing a tube of sunscreen over his shoulder, a bare-chested TikTok influencer declares that the cream causes cancer. He instead promotes "regular sun exposure" to his 400,000 followers—contradicting US dermatologists ...
Jul 21, 2024
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Mild cognitive impairment—an early stage of dementia—is widely underdiagnosed in people 65 and older. That is the key takeaway of two recent studies from our team.
Mar 24, 2024
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A new drug called kush is wreaking havoc in west Africa, particularly in Sierra Leone where it is estimated to kill around a dozen people each week and hospitalize thousands.
Jan 16, 2024
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Researchers at the University of California San Diego School of Medicine have shed new light on the changes in metabolism that occur between birth and the presentation of autism spectrum disorder (ASD) later in childhood. ...
May 10, 2024
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Despite ongoing concerns about the health impacts of non-sugar sweeteners such as aspartame, sucralose and stevia, these sweeteners are increasingly found in a variety of foods and beverages, including those aimed at children. ...
Jan 22, 2024
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Mount Sinai researchers, in collaboration with scientists at The Rockefeller University, have uncovered a mechanism in the brain that allows cocaine and morphine to take over natural reward processing systems. Published online ...
Apr 18, 2024
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A team of medical researchers affiliated with several institutions in the U.S. has found that a high percentage of doctors posting endorsements regarding drugs on the social media site X were paid to do so by the makers of ...
A study led by VA Connecticut Healthcare Center/Yale researchers reveals ancestries around the world possess a shared genetic architecture for problematic alcohol use (PAU)—habitual heavy drinking, accompanied by harmful ...
Dec 22, 2023
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Drug development is typically slow: the pipeline from basic research discoveries that provide the basis for a new drug to clinical trials to production of a widely available medicine can take decades. But decades can feel ...
Jun 27, 2024
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There are many drugs that anesthesiologists can use to induce unconsciousness in patients. Exactly how these drugs cause the brain to lose consciousness has been a longstanding question, but MIT neuroscientists have now answered ...
Jul 15, 2024
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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.
This text uses material from Wikipedia, licensed under CC BY-SA
