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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

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

Not all Chinese food is equal: study ranks cuisines by inflammatory potential

Researchers analyzed 980 dishes from eight major Chinese cuisines to evaluate their nutritional profiles and inflammatory potential using the Dietary Inflammatory Index (DII).

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

New ESC consensus statement advances conduction system pacing therapy

The European Society of Cardiology (ESC) has released a groundbreaking consensus statement on conduction system pacing (CSP), marking a significant milestone in the evolution of pacing therapy.

29 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

New PCR test offers hope for better treatment of bacterial vaginosis

Roughly one out of three women ages 14-49 in the United States develop a vaginal bacterial imbalance known as bacterial vaginosis (BV) during their lifetime.

28 Mar 2025

Studies explore bioactive compounds in plants for disease prevention

Fruits and plant extracts contain bioactive compounds that can help treat or prevent diseases. To characterize and understand their mechanism of action, researchers from universities and research institutions in Brazil and Germany have conducted independent but complementary studies.

28 Mar 2025

Six promising biomarkers could improve early and accurate detection of kidney injury

Critical Path Institute® (C-Path) and Boston Medical Center (BMC) published results for six biomarkers that could improve the early and accurate detection of kidney injury, leading to both the development of safer medications and better health outcomes for all patients.

28 Mar 2025

3D-printed hydrogel offers new hope for meniscus tear treatment

Meniscus tears are common knee injuries that have long frustrated patients and doctors due to limited repair options.

28 Mar 2025

Cold water immersion boosts cellular health and resilience

Ever wondered what happens to your body when you take those trendy ice baths? Scientists at the University of Ottawa just found out, and it's pretty fascinating.

28 Mar 2025

Artificial neurons learn independently in self-organized networks

Novel artificial neurons learn independently and are more strongly modeled on their biological counterparts.

28 Mar 2025

New research reveals factors influencing steroid hormone levels in healthy adults

Steroid hormone levels in healthy adults are influenced by oral contraceptives and smoking, as well as other lifestyle choices and factors such as biological sex and age, according to new research that has just been published in leading international journal Science Advances.

28 Mar 2025

New insights into how glutamate opens brain cell signaling channels

In an effort to understand how brain cells exchange chemical messages, scientists say they have successfully used a highly specialized microscope to capture more precise details of how one of the most common signaling molecules, glutamate, opens a channel and allows a flood of charged particles to enter.

28 Mar 2025