A study of U.S. high school students reveals a strong link between suicidal behavior, externalizing behaviors (such as physical violence), and exposure to violence. Adolescents with a history of weapon carrying or engaging in violent acts were found to have a higher risk of injurious suicide attempts, particularly when firearms are accessible.

Researchers have developed the smallest walking robots, measuring just 2 to 5 microns, capable of interacting with visible light for imaging and force measurement. These magnetically controlled robots can inch forward or swim through fluids while serving as diffraction elements, enabling super-resolution microscopy at scales previously unattainable.

A large international replication study challenges the belief that morality is innate in infants. Testing over 1,000 children aged 5.5 to 10.5 months, researchers found no consistent preference for characters exhibiting prosocial behavior.

Researchers identified specific plant compounds that provide antioxidant and neuroprotective effects, contributing to brain health beyond basic nutrition. By analyzing plant-based foods like lemon balm, sage, and elderberry, scientists linked compounds such as phenolics and terpenes to benefits like reducing oxidative stress and scavenging harmful reactive species.

Skin conductance offers a promising new way to measure emotional states, bypassing the limitations of facial recognition. In an experiment, volunteers watched videos evoking fear, humor, and family bonding while their skin's electrical properties were recorded.

Individual differences in gut physiology and environment play a major role in shaping our gut microbiome and how we process food. Using a smart capsule to measure pH, temperature, and pressure, researchers found significant variations in digestion time and gut conditions between people.

Ketone bodies, known for their role in energy metabolism during fasting, have been shown to directly interact with damaged proteins in the brain, aiding their clearance through autophagy. Researchers discovered that the ketone body β-hydroxybutyrate alters the solubility of misfolded proteins, facilitating their removal and reducing pathological aggregation.

Alcohol not only raises pain tolerance but also amplifies aggression, according to a new study. Researchers found that participants who drank alcohol had higher pain thresholds and were more willing to inflict painful shocks on others.

A new study links visceral fat, a deep layer of abdominal fat, to increased brain amyloid and tau proteins—key markers of Alzheimer’s disease—decades before dementia symptoms arise. Researchers found that visceral fat accounted for 77% of the relationship between high BMI and amyloid accumulation, while other fat types showed no similar impact. The study highlights how managing visceral fat through lifestyle changes or medication could reduce Alzheimer's risk.

A new study challenges the long-held belief that axons, brain cell extensions, are tube-like, revealing instead a "pearl-on-a-string" structure. Using advanced freezing electron microscopy, researchers found these bead-like formations, termed "non-synaptic varicosities," across mouse neurons.

Researchers have identified the lateral hypothalamus (LH) as a key brain region for walking recovery in spinal cord injury (SCI) patients, demonstrating that deep brain stimulation (DBS) can significantly enhance mobility and autonomy. Unlike traditional DBS applications, targeting the LH promotes long-term neurological improvements, even when stimulation is off. A clinical trial showed dramatic outcomes in participants, with restored walking ability and improved daily independence.

Men who strongly adhere to traditional masculine ideologies, such as suppressing emotions and valuing independence, are more than twice as likely to attempt suicide compared to those with more egalitarian views. The study identified three groups of men—Egalitarians, Players, and Stoics—with Stoics being at the highest risk due to their attitudes and behaviors, especially during mental health crises.