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Does coffee disrupt sleep? Large population study suggests the impact may be minimal

A large cross-sectional analysis of 25,381 Swedish adults aged 50–64 found that habitual coffee consumption showed only very weak associations with sleep quality and daytime sleepiness. Genetic analyses confirmed known coffee-related variants and suggested that long-term caffeine exposure may lead to adaptation in the brain’s adenosine signaling system.

11 Mar 2026

AI-powered wearable ECG system detects myocardial ischemia minutes earlier

Myocardial ischemia, the primary driver of heart attacks, remains the leading cause of death and disability worldwide. Delays in diagnosis directly correlate with increased myocardial necrosis, higher complication rates, and elevated mortality.

10 Mar 2026

Cellular energy changes may help detect early-stage major depression

Researchers may have discovered a new way to diagnose and treat major depression at the earliest stage of the condition, giving patients the best opportunity for recovery.

10 Mar 2026

Spring fatigue is a cultural rather than biological phenomenon

When the days start to get longer again, Dr Christine Blume's phone rings more often. That's because journalists want to ask the sleep researcher what spring fatigue is all about.

9 Mar 2026

Disrupted iron levels after SARS-CoV-2 infection may trigger long COVID

Problems with iron levels in the blood and the body's ability to regulate this important nutrient as a result of SARS-CoV-2 infection could be a key trigger for long COVID, new research has discovered.

6 Mar 2026

Menstrual stigma influences work, school and social participation

Only 1 in 6 participants maintain their daily activities without change during menstruation, according to a study on menstrual health conducted in Spain and led by the INGENIO Institute (UPV-CSIC).

5 Mar 2026

New ACS framework links surgeon well-being to patient safety

The American College of Surgeons (ACS) has released the first national framework outlining measurable workplace standards for surgeons, aimed at improving surgeon well-being, patient safety, and workforce sustainability. The framework is published in the Journal of the American College of Surgeons (JACS).

5 Mar 2026

Tracking physiological stress during prolonged virtual soccer

Extended esports play can lead to mental fatigue, resulting in slower and less precise decision-making (diminished executive control) and a variety of physiological responses indicative of impaired sensorimotor or cognitive function.

5 Mar 2026

Nearly 70 weeks after infection, long COVID patients show no detectable inflammation in blood tests

A controlled Norwegian case-control study examined circulating biomarkers of inflammation and neuronal injury in people with long COVID about 69 weeks after infection. The researchers found no significant differences in systemic inflammatory or neuroinjury markers compared with recovered controls after statistical correction.

4 Mar 2026

Natural fungal supplement strengthens vaccine protection without increasing side effects

Researchers at University California San Diego School of Medicine have found that a natural fungal supplement taken at the time of COVID-19 vaccination reduced short-term vaccine side effects and helped antibodies - the body's natural immune defenders - last longer in people who had not previously been exposed to the virus.

4 Mar 2026

Drinking sparkling water helps gamers stay mentally sharp for hours

Sparkling water may combat cognitive fatigue in gamers, sustaining mental sharpness and executive function during extended esports sessions without stimulants.

4 Mar 2026

Experts identify safest and most effective diets for IBS management

This review in Nutrients evaluates the scientific evidence, clinical effectiveness, and safety of major dietary strategies for irritable bowel syndrome, including traditional advice, low-FODMAP, gluten-free, Mediterranean, and starch- and sucrose-reduced diets. It concludes that while the low-FODMAP diet has the strongest short-term evidence, no single approach fits all patients, and dietitian-led personalization is essential.

2 Mar 2026

High-dose curcumin fails to produce lasting gut-microbiome changes in IBD patients

In an open-label study of 29 men, including patients with ulcerative colitis and Crohn’s disease in remission, 6 g per day of curcumin for eight weeks led to modest, transient shifts in gut microbiota composition without sustained restructuring. Despite achieving high fecal concentrations and minimal systemic bioavailability, curcumin did not produce durable microbiome changes, and disease activity scores remained stable.

2 Mar 2026

COVID-19 ARDS survivors face lasting disability and high late mortality, researchers report

In this single-center ambispective cohort of 283 Polish patients with COVID-19–related ARDS requiring invasive mechanical ventilation, cumulative mortality reached 44.5% at four years after ICU admission. Among survivors, substantial proportions reported persistent functional limitations, insomnia, fatigue, and reduced quality-adjusted life years.

2 Mar 2026

Zero-alcohol ads may increase teens’ intent to drink alcohol

Findings indicate zero-alcohol advertising could serve as indirect marketing for alcohol, raising questions about its impact on adolescent drinking behaviors.

27 Feb 2026

Matching academic demands to teen biology

High school students often have trouble getting to bed at a reasonable time, which makes it difficult for them to start school early in the morning. This is because teenagers are biologically wired to fall asleep later than adults, with their biological clock shifting progressively later throughout adolescence. The result is that most teenagers don't get enough sleep on school days, and their sleep deficits increase as the week progresses.

26 Feb 2026