Reference Terms
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Post-traumatic stress disorder
Post-traumatic stress disorder (PTSD) is a term for certain psychological consequences of exposure to, or confrontation with, stressful experiences that the person experiences as highly traumatic. These experiences can involve actual or threatened death, serious physical injury, or a threat to physical and/or psychological integrity. It is occasionally called post-traumatic stress reaction to emphasize that it is a routine result of traumatic experience.
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Health & Medicine News
August 1, 2025
Aug. 1, 2025 — Ape behavior just got a name upgrade — “scrumping” — and it might help explain why humans can handle alcohol so well. Researchers discovered that African apes regularly eat overripe, ...
Aug. 1, 2025 — Women who drank heavily, even though they strongly wished to avoid pregnancy, were 50% more likely to become pregnant than those who drank little or not at all, according to new research. Surprisingly, cannabis use didn t show the same ...
July 31, 2025 — In an exciting breakthrough, researchers have identified cancer drugs that might reverse the effects of Alzheimer's disease in the brain. By analyzing gene expression in brain cells, they discovered that some FDA-approved cancer medications could ...
July 31, 2025 — GLP-1 drugs like Ozempic are transforming weight loss, but a new UVA study warns they're not improving a critical measure of health: cardiorespiratory fitness. While these medications help people shed fat, they also strip away vital muscle mass ...
July 31, 2025 — Stepping into a virtual forest or waterfall scene through VR could be the future of pain management. A new study shows that immersive virtual nature dramatically reduces pain sensitivity almost as ...
July 30, 2025 — Potent statins are the best-proven weapon against heart disease, especially when paired with lifestyle changes. Most people aren’t active enough—and many are underdiagnosed—so starting treatment strong is ...
July 30, 2025 — A newly mapped neural circuit shows how our skin senses cool temperatures and sends that info to the brain, revealing an unexpected amplifier in the spinal cord and offering insight into cold-related ...
July 30, 2025 — A group of Australian scientists has uncovered a new way to fight some of the toughest cancers by targeting an overlooked cellular process called minor splicing. This tiny but vital mechanism turns out to be essential for the growth of certain ...
July 30, 2025 — A new global study reveals a striking post-pandemic surge in gut-brain disorders like IBS and functional dyspepsia. Researchers compared data from 2017 and 2023 and discovered sharp increases—IBS up 28% and dyspepsia nearly 44%. Those suffering ...
July 29, 2025 — Scientists at Kyoto University have developed a groundbreaking "lung-on-a-chip" that can mimic the distinct regions of human lungs—airways and alveoli—to study how viruses like COVID-19 affect them differently. Powered by isogenic induced ...
July 29, 2025 — A global study of over 88,000 adults reveals that poor sleep habits—like going to bed inconsistently or having disrupted circadian rhythms—are tied to dramatically higher risks for dozens of diseases, including liver cirrhosis and gangrene. ...
July 29, 2025 — Scientists at Columbia Engineering have developed an injectable hydrogel made from yogurt-derived extracellular vesicles (EVs) that could revolutionize regenerative medicine. These EVs serve both as healing agents and as structural components, ...
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updated 12:56 pm ET
Aug. 1, 2025 — A powerful new synthetic opioid, up to 1000 times stronger than morphine, has emerged in Adelaide’s street drug supply, and researchers are sounding the alarm. Nitazenes, often hidden in heroin or ...
Aug. 1, 2025 — Scientists have discovered the oldest direct evidence of betel nut chewing in Southeast Asia by analyzing 4,000-year-old dental plaque from a burial in Thailand. This breakthrough method reveals ...
July 29, 2025 — Fast walking, even just 15 minutes a day, can dramatically reduce the risk of death, especially from heart disease, according to a large study involving nearly 80,000 low-income and predominantly ...
July 29, 2025 — A mysterious gut hormone may be behind many cases of chronic diarrhea, especially in people with undiagnosed bile acid malabsorption, a condition often mistaken for irritable bowel syndrome. ...
July 28, 2025 — Walking just a bit faster could be the key to aging well. Researchers found that older adults who upped their walking pace by just 14 steps per minute significantly improved their physical ...
July 28, 2025 — Eggs are finally being vindicated after decades of cholesterol-related blame. New research from the University of South Australia reveals that eggs, despite their cholesterol content, aren't the ...
July 28, 2025 — Over-the-counter (OTC) products like St John’s Wort and omega-3s have long been touted for helping with depression, but new research reveals that ...
July 28, 2025 — Many people with dementia endure long delays often over 3 years before receiving a diagnosis, with even longer waits for younger patients. A global review of over 30,000 cases reveals that age, ...
July 27, 2025 — A team of scientists has developed a remarkable new approach to modeling how cells behave over time—using a digital "forecast" much like predicting the weather. By combining patient genomics with a ...
July 27, 2025 — Between 2020 and 2024, COVID-19 vaccines saved 2.5 million lives globally, preventing one death for every 5,400 doses. A groundbreaking worldwide study led by researchers from Università Cattolica ...