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Brain-protecting immune cells may actually drive Alzheimer's disease

Immune cells that normally protect the body from damage by attacking foreign or infected cells are found in the brains of patients with Alzheimer's disease and related disorders at much higher levels than in healthy brains.

3 Sep 2026

Too little or too much testosterone may matter for heart rhythm

A review of clinical trials, observational studies, genetic analyses, and mechanistic research suggests that atrial fibrillation risk may follow a U-shaped relationship with testosterone, increasing at both low and high levels. Evidence on testosterone replacement therapy remains mixed, with researchers calling for prospective studies to determine whether mid-physiological testosterone targets and treatment formulation influence AF risk.

2 Sep 2026

Immigrants face longer ICU stays after stroke in Canada

Among people who have a stroke in Canada, immigrants were admitted to the intensive care unit (ICU) at similar rates as long-term residents or people who were born in Canada, but they were more likely to have longer stays in the ICU, according to a study published September 2, 2026, in Neurology, the medical journal of the American Academy of Neurology.

2 Sep 2026

High-dose folic acid appears safe from formaldehyde toxicity

Folic acid – an essential vitamin added to flour and cereals and prescribed at high doses for cancer patients and people with blood disorders – does not elevate toxic formaldehyde in the body, according to a new Cornell University study on mice and human cancer patients who consumed high doses.

2 Sep 2026

Daraxonrasib shows durable responses in RAS-mutant lung cancer

Daraxonrasib, an oral RAS inhibitor therapy, achieved durable responses in pretreated patients with RAS-mutant non-small cell lung cancer (NSCLC) in a Phase 1/2 trial led by The University of Texas MD Anderson Cancer Center.

2 Sep 2026

Newly diagnosed AML patients benefit from less-intensive combination treatment

Investigators from the Mass General Brigham Cancer Institute have found that adults with newly diagnosed acute myeloid leukemia (AML) receiving a less-intensive combination of azacitidine and venetoclax had more than twice as much time before treatment failed, the leukemia returned or worsened, or they died, compared with patients receiving intensive chemotherapy.

2 Sep 2026

Daily steps may match aerobic training for asthma control

For people with moderate to severe asthma, increasing the number of daily steps may be as effective as structured aerobic training sessions for managing the disease.

2 Sep 2026

Shared biological pathways may explain chronic fatigue across diseases

A shared biological secret that helps explain chronic exhaustion in conditions including long Covid and PTSD has been discovered by researchers at the University of East Anglia and Oxford BioDynamics.

2 Sep 2026

Alcohol-linked cancer deaths doubled over three decades in America

Alcohol-attributable cancer deaths in the U.S. doubled between 1990 and 2023, a new study found. The study also revealed that alcohol-linked cancer deaths are not limited to older adults or liver cancer.

2 Sep 2026

Why addiction researchers are paying closer attention to GLP-1 drugs

A Journal of Clinical Investigation Viewpoint highlights growing evidence that GLP-1 receptor agonists, particularly semaglutide, may reduce alcohol consumption and some other substance-related outcomes by acting on brain systems involved in reward, motivation, stress, and emotion. However, the authors caution that efficacy for substance use disorders is not yet firmly established and call for further research into optimal dosing, treatment duration, patient selection, mechanisms, and effects across different addictions.

2 Sep 2026

Blocking a naturally occurring molecule reverses deadly lung disease in preclinical models

Researchers blocked a naturally occurring molecule to reverse pulmonary arterial hypertension in preclinical models, a finding that could point to a new treatment approach for people with a rare and often fatal lung disease.

2 Sep 2026

New drug class shows major promise for shrinking nerve tumors

A scientist at Cincinnati Children's who has hunted for decades for ways to shrink the painful and disfiguring nerve tumors caused by neurofibromatosis type 1 (NF1) has made a new breakthrough in the quest.

2 Sep 2026

Two scientists win Horwitz Prize for Rett syndrome breakthrough

Columbia University will award the 2026 Louisa Gross Horwitz Prize to Adrian Bird and Huda Zoghbi for their pioneering work on epigenetic regulation in the nervous system and its role in human neurological disease, particularly Rett syndrome.

2 Sep 2026

Post-trauma mental health conditions increase future cardiovascular risks

Mental health conditions, such as posttraumatic stress disorder (PTSD), substance abuse, depression and anxiety, can develop after people experience trauma.

2 Sep 2026

Study reveals why many patients fail to recover after stroke

A clot forms. Blood flow to the brain is blocked. Starved of oxygen, neurons begin to die.

2 Sep 2026

Post-surgery immunotherapy may not benefit specific lung cancer patients

A new real-world observational study has found that adding adjuvant immunotherapy after surgery does not significantly improve survival outcomes in patients with resectable non-small cell lung cancer (NSCLC) who have already achieved a pathological complete response (pCR) following neoadjuvant chemoimmunotherapy.

2 Sep 2026

Scientists develop lab-grown heart tissue model for heart failure

Scientists study the underlying causes of a disease or test new potential drugs in animal models or cells obtained from human biopsy specimens before clinical trials.

2 Sep 2026

Giving immunotherapy before surgery boosts brain tumor treatment success

A team from UNIGE and HUG has shown that administering cell immunotherapy before surgery to remove a brain tumor is significantly more effective than administering it afterwards.

2 Sep 2026

Bridging science and family story to understand schizophrenia origins

Twin studies have placed the heritability of schizophrenia at roughly eighty percent for decades. Concordance between identical twins, who share the entire genome, does not reach fifty percent. Both figures are well established, and they do not fit together comfortably.

2 Sep 2026

Researchers discover dozens of genes tied to OCD and tic disorders

A Rutgers-led international collaboration has identified 36 genes that substantially raise the risk for obsessive-compulsive disorder (OCD) and chronic tic disorders – providing what two researchers said is the most detailed biological understanding of how these conditions develop – and how they might eventually be treated.

2 Sep 2026