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More than a century ago, Pavlov trained his dog to associate the sound of a bell with food. Ever since, scientists assumed the dog learned this through repetition: The more times the dog heard the bell and then got fed, the better it learned that the sound meant food would soon follow.

A new Edith Cowan University (ECU) study has found advertisements that encourage healthy choices can reduce cravings and intentions to consume unhealthy foods, and in some cases a 15-second message may be more effective than traditional 30-second commercials.

A phase IIa randomized trial found that intravenous dimethyltryptamine (DMT) with structured psychological support produced rapid reductions in depressive symptoms in adults with major depressive disorder. Improvements were statistically significant versus placebo at two weeks, with mostly mild-to-moderate adverse events and the need for larger confirmatory studies emphasized.

A Cochrane systematic review of 22 randomized trials involving 1,995 adults with overweight or obesity found intermittent fasting produces weight loss comparable to traditional calorie restriction. Evidence suggests little additional benefit for quality of life or adverse effects, with overall certainty ranging from low to moderate and long-term effects still unclear.

Immunotherapy – which activates the body's own immune system to kill cancer cells – has not worked well against a rare and fatal liver cancer, but a new Cornell University study finds an existing FDA-approved drug may allow the immunotherapy to fight the cancer as intended, opening the door to a potential treatment.

People with greater exposure to air pollution face a higher risk of developing Alzheimer's disease, according to a new study by Yanling Deng of Emory University, U.S.A., and colleagues, published February 17th in the open-access journal PLOS Medicine.

Maternal smoking during pregnancy may be associated with higher blood pressure and increased risk of hypertension in children, according to a new ECHO Cohort study led by Lyndsey Shorey-Kendrick, PhD, of Oregon Health & Science University and Christine Ladd-Acosta, PhD, of Johns Hopkins University.

A five-year study has revealed that children with sleep apnea are twice as likely to contract the flu or COVID-19, regardless of their age or weight.

A study co-led by University of Texas at Dallas bioengineers identified a distinctive feature of tissues from young patients diagnosed with colorectal cancer, a disease that typically affects older patients.

A new study from the Advocate Aurora Research Institute - which is part of Advocate Health - published Tuesday in Hospital Pediatrics provides guidance for families and physicians caring for infants and young children hospitalized with a febrile urinary tract infection (UTI), one of the most common infections in early childhood.

Researchers at The University of Texas MD Anderson Cancer Center have developed a new computational approach designed to better account for changes in gene expression within tumors relative to their unique microenvironments.

People with ulcerative colitis (UC), a chronic inflammatory bowel disease, are up to four times more likely to develop colorectal cancer than the general population.

A new systematic review and meta-analysis published in Otolaryngology–Head and Neck Surgery, the official journal of the American Academy of Otolaryngology–Head and Neck Surgery Foundation (AAO-HNSF), reveals that musicians face substantially higher rates of tinnitus, hearing loss, and hyperacusis compared to non-musicians.

Industrial yeasts are a powerhouse of protein production, used to manufacture vaccines, biopharmaceuticals, and other useful compounds.

For years, rising rates of myopia - or nearsightedness - have been widely attributed to increased screen time, especially among children and young adults.

Fred Hutch Cancer Center scientists reached a crucial milestone in blocking Epstein Barr virus (EBV), a pathogen estimated to infect 95% of the global population that is linked to multiple types of cancer, neurodegenerative diseases and other chronic health conditions.

Harlequin ichthyosis (HI) is a rare, severe genetic skin disorder caused by ABCA12 mutations, leading to defective lipid transport and loss of skin barrier function.

Nucleotide synthesis-the production of the basic components of DNA and RNA-is essential for cell growth and division.

PulpFixin®, a materials science company focused on replacing single-use plastics in life science laboratories, will debut a slate of new automation-ready, compostable lab products at the 2026 SLAS International Conference and Exhibition in Boston, expanding its footprint across liquid handling, sample identification and cold storage workflows.

Hospital admissions for maltreatment of children under the age of 2 years declined 31% during the 16-week lockdown at the start of the COVID-19 pandemic, returning to prepandemic levels after restrictions lifted, according to new research published in CMAJ (Canadian Medical Association Journal).