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Pulse oximeter accuracy varies across skin pigment groups

The differences, or bias, between estimates of blood oxygen saturation levels as measured with pulse oximeters compared to the gold-standard method of measuring oxygen saturation in arterial blood varied significantly between patients with darkly pigmented skin compared to lighter skin pigment, according to research presented at the American College of Cardiology's Annual Scientific Session.

31 Mar 2025

AI model matches high-sensitivity troponin testing in diagnosing heart attacks

An artificial intelligence (AI) model trained to detect blocked coronary arteries based on electrocardiogram (ECG) readings performed better than expert clinicians and was on par with troponin T testing, according to research presented at the American College of Cardiology's Annual Scientific Session (ACC.25).

31 Mar 2025

Can natural supplements backfire? Review explains how and why

A new review uncovers how common natural supplements can both protect and endanger health, depending on dose, duration, and delivery—and points to next-gen technologies as the key to unlocking their full therapeutic power.

31 Mar 2025

Food delivery apps can lower salt use with one small change

Researchers tested whether menu design and health messages on a Chinese food delivery app could nudge customers to order lower-salt meals. They found that changing default settings on menus—especially defaulting to "reduced salt"—was more effective than educational messages alone.

30 Mar 2025

AI reveals how much hidden sugar is in packaged foods worldwide

Researchers developed a machine-learning algorithm to accurately predict free sugar content in packaged foods globally. The model enables large-scale assessment of carbohydrate quality based on fiber and sugar content.

30 Mar 2025

Caffeine and beetroot juice beat fatigue in repeated high-intensity runs

Caffeine combined with beetroot juice significantly improves both initial and repeated 1000-meter running performance in non-athlete men. Body fat percentage, sleep duration, and nutrition emerge as key factors influencing endurance outcomes.

30 Mar 2025

Hedonic eating fades with obesity—but neurotensin helps bring it back

Chronic high-fat diets blunt the brain’s pleasure response to rich foods by impairing NAcLat→VTA signaling in mice. Neurotensin dysfunction underlies this effect, but restoring its signaling revives hedonic feeding and reduces obesity symptoms.

30 Mar 2025

Eating ultra-processed food daily increases depression risk in older adults

Eating four or more servings of ultra-processed food daily increases the risk of depression by 10% in older adults and modestly reduces their mental health-related quality of life.

30 Mar 2025

Why sucralose could make you hungrier instead of helping you lose weight

Sucralose increases hypothalamic activity linked to hunger more than sugar or water, especially in women and people with obesity.

30 Mar 2025

Can brain-healthy eating improve your quality of life? This study tested it

A 12-week feasibility trial tested the MIND diet in midlife adults, showing improved diet quality, mood, and physical quality of life but no significant cognitive gains.

30 Mar 2025

WARRIOR trial finds no impact of intensive therapy on heart events in women

An intensive three-drug regimen of heart medications did not significantly impact the rate of serious cardiovascular events at five years in women who experienced signs and symptoms of ischemia, or insufficient blood flow to the heart muscle, but had no blockages in their heart's arteries, according to research presented at the American College of Cardiology's Annual Scientific Session.

29 Mar 2025

Semaglutide improves maximal walking distance in people with symptomatic PAD and Type 2 diabetes

Semaglutide, a glucagon-like peptide 1 (GLP-1) agonist, significantly improved maximal walking distance in people with symptomatic peripheral artery disease (PAD) and Type 2 diabetes in the first-of-its kind trial to evaluate the use of a GLP-1 agonist to manage PAD.

29 Mar 2025

Study finds 4F-PCC superior to frozen plasma in reducing bleeding after cardiac surgery

In patients experiencing excessive bleeding during cardiac surgery, a concentrated blood product containing proteins that help the blood clot was significantly more effective and caused fewer adverse effects than frozen plasma, the standard therapy, according to a study presented at the American College of Cardiology's Annual Scientific Session (ACC.25).

29 Mar 2025

Research reveals optimal duration of dual antiplatelet therapy after stent implantation

Patients who have a stent implanted to open a blocked coronary artery face dual risks of developing blood clots and of having excessive bleeding in the months following the procedure.

29 Mar 2025

Study aims to determine best method for statin prescription in coronary heart disease

A new study by researchers at Intermountain Health in Salt Lake City aims to determine the best method to screen and evaluate patients who are at risk of developing coronary heart disease and which patients would benefit from taking a statin medication to lower cholesterol.

29 Mar 2025

Zero coronary artery calcium score predicts low heart risk at any age

Having a coronary artery calcium (CAC) score of zero has generally been accepted as a marker of a very low risk of having a cardiac event within the next five years. However, age is a strong contributor to coronary risk, with risk increasing markedly as people age.

29 Mar 2025

Owlstone Medical secures investment from Cystic Fibrosis Foundation

Owlstone Medical ("Owlstone"), the global leader in Breath Biopsy® for applications in early disease detection and precision medicine, today announced that the Cystic Fibrosis Foundation has made an up to USD $2.3 million equity investment (circa £1.7 million) in Owlstone to develop a breath test for Pseudomonas aeruginosa (PA) detection in patients with cystic fibrosis (CF).

29 Mar 2025

The Giants Foundation and American Heart Association promote life-saving CPR skills

The American Heart Association and The Giants Foundation, the nonprofit organization of the New York Giants, gathered representatives from 12 local schools for cardiopulmonary resuscitation (CPR) and automated external defibrillator (AED) training on March 20 at MetLife Stadium.

28 Mar 2025

Study uncovers how resistance to chemotherapies may occur in some cancers

Investigators at Mass General Brigham have uncovered how resistance to chemotherapies may occur in some cancers. Researchers focused on a pathway that harnesses reactive oxygen species (ROS) to kill cancer cells.

28 Mar 2025

AI-based tool aims to improve mosquito identification for disease control

Morphology is the study of the form and structure of organisms, including their physical characteristics such as shape, size and arrangement of parts.

28 Mar 2025