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Social isolation emerges as a key, independent risk factor for cognitive decline

Using longitudinal data from the US Health and Retirement Study, this study applied causal inference modeling to disentangle the independent and joint effects of social isolation and loneliness on later-life cognitive function. It shows that reducing social isolation is associated with modest but meaningful protection against cognitive decline, with loneliness mediating only a small proportion of this effect.

17 Dec 2025

Brain structural changes linked to chronic PTSD in World Trade Center responders

New research among World Trade Center (WTC) responders with chronic post-traumatic stress disorder (PTSD) has uncovered measurable physical changes in their brain structure, consistent with changes in the balance of myelinated to unmyelinated neurons (fast- and slow-conducting nerve cells) across both hemispheres of the brain.

17 Dec 2025

Nicotine pouch use rises sharply among young men in Great Britain

Use of nicotine pouches has risen substantially in Great Britain over the last five years, particularly among young men, with one in 13 (7.5%) men aged 16 to 24 now using them, according to a new study led by researchers at UCL (University College London).

17 Dec 2025

Lysophosphatidylcholines show gene-dependent effects in early Alzheimer’s disease

A new study presents robust evidence on the role of lysophosphatidylcholines (LPCs) in the onset of Alzheimer's disease. Researchers discovered that LPCs-compounds that transport a variety of healthy fatty acids to the brain-either promote Alzheimer's or protect against it, depending on a person's genetics.

17 Dec 2025

Study shows iCTG improves perinatal outcomes in resource-constrained settings

Ninety-nine percent of global newborn deaths occur in low- and middle-income countries (LMICs), where pregnant women often struggle to access adequate fetal monitoring. In Tanzania, with 24 neonatal deaths per 1000 live births, a new wireless fetal heart rate monitoring technology is showing promise in preventing newborn complications and deaths.

17 Dec 2025

Chronic breathlessness drives longer hospital stays and higher healthcare costs

Chronic breathlessness, a symptom often overlooked by healthcare systems, is associated with longer lengths of hospital stay on already overstretched healthcare resources, says new Flinders University research.

16 Dec 2025

Salutogenic microbes offer new pathways to better health

Viruses and bacteria get a bad rap around the world but now Flinders University experts are identifying the positive 'upside' of powerful benefits that microbes have on human health.

16 Dec 2025

Poor housing conditions harm children’s school attendance and grades

Children living in substandard housing in England miss 15 more school days and achieve worse test scores in English and maths than their peers living in better quality housing, suggests research published online in the Journal of Epidemiology & Community Health.

16 Dec 2025

Cannabis and nicotine co-use is widespread among young adults

Simultaneous use of cannabis with nicotine and tobacco products is common among cannabis users-particularly those who vape-according to a new study from Columbia University Mailman School of Public Health.

16 Dec 2025

Global leaders adopt political declaration to combat NCDs and mental health challenges

Leaders from across the world at the Eightieth United Nations General Assembly (UNGA) have adopted the political declaration to combat noncommunicable diseases (NCDs) and mental health challenges through a fully integrated approach.

16 Dec 2025

Higher benefit redemption predicts longer participation in the WIC program

Over five decades, the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) has become known as the nation's first "food as medicine" program.

16 Dec 2025

Tau biology expands beyond microtubules to neurodegeneration, metabolism and mental illness

An Thought Leaders Invited Review published today in Genomic Psychiatry by Dr. Peng Lei and colleagues presents a sweeping synthesis of tau protein research that fundamentally reframes our understanding of this molecule's dual identity.

16 Dec 2025

What Americans eat is driving global nutrition research

WWEIA data, a cornerstone of national dietary surveillance, drives nutrition research and policy, enhancing understanding of dietary trends and health outcomes.

16 Dec 2025

Mediterranean diet and healthy habits improve cancer survival rates

Being more physically active, following a balanced diet, not smoking, and keeping body weight and blood pressure under control: the same habits that protect the heart also prove decisive after a cancer diagnosis.

16 Dec 2025

New research highlights the importance of social engagement for cognitive health

New research from the University of St Andrews has discovered a direct causal effect between social isolation and a faster decline in later- life cognitive function. Pathological cognitive decline is most often driven by Alzheimer's and related dementias.

16 Dec 2025

Indoor tanning loads normal skin with mutations linked to melanoma

Indoor tanning is associated with markedly higher mutation burdens and cancer-driving genetic changes in melanocytes taken from normal-appearing skin, including areas usually protected from sunlight. These molecular alterations provide a biological explanation for the higher odds of melanoma and multiple primary tumors seen in heavy tanning bed users.

15 Dec 2025