Summary: A new review examines biological sex differences in responses to cannabis. Researchers report that women may develop problematic cannabis use faster than men and that females show distinct endocannabinoid levels and more sensitive receptors in brain regions tied to social behavior. Source: Frontiers. Cannabis use has increased alongside decriminalization, legalization and the rise of … Read more

Summary: Common weight-loss and type 2 diabetes drugs known as GLP-1 receptor agonists (including semaglutide and liraglutide) have robust preclinical evidence showing they reduce the core biological markers of Alzheimer’s disease. A systematic review of 30 preclinical studies reports consistent reductions in the two hallmark proteins that define Alzheimer’s pathology — amyloid-beta and hyperphosphorylated tau. … Read more

Summary: Brain responses to sound in older children with mild-to-moderate hearing loss are reduced compared with their peers who have normal hearing. Source: University of Cambridge Overview: Deafness in early childhood is known to cause lasting changes in how the brain processes sound. New research published in eLife shows that even mild-to-moderate sensorineural hearing loss … Read more

Summary: A new study in genetics and developmental biology resolves a long-standing question about how organisms control the precise timing of growth milestones. Using the model organism C. elegans, researchers discovered that a feedback circuit formed by two proteins, MYRF-1 and LIN-42, functions as the genome’s master developmental clock. This circuit produces a finite series … Read more

Summary: Researchers identified previously unseen spontaneous neuronal pulses that appear when a limb is immobilized, offering insight into how the brain preserves and restores motor pathways after injury or illness. Source: WUSTL A Washington University School of Medicine neuroscientist’s neon-pink arm cast led to the discovery of brief, spontaneous brain activity pulses that emerge when … Read more

Researchers at the University of Miami find that large-scale connectivity in autism changes with age. Autism spectrum disorder (ASD) is associated with alterations in how brain regions communicate. A new study from the University of Miami reports that large-scale patterns of functional brain connectivity in people with autism differ from typically developing (TD) individuals and … Read more

Summary: A new study challenges the common belief that society is steadily becoming more polarized. It shows that people’s impressions of deep division often arise from the degree of agreement inside their own social circles. The researchers present a new approach that separates actual opinion divergence from how polarized people feel society is. The analysis … Read more

Summary: New research from Washington State University found that rats with naturally higher baseline stress hormones are far more likely to self-administer cannabis vapor. Over several weeks, animals were given the opportunity to nose-poke to release brief bursts of cannabis vapor, and those with elevated corticosterone levels displayed the strongest and most persistent drug-seeking behavior. … Read more

Americans have embraced the idea that companion animals bring comfort and joy: not just puppies but rabbits, pot-bellied pigs, cockatiels, ferrets, ball pythons, iguanas and even tarantulas. The specific species matters less than the role these animals play in restoring calm and lowering stress—whether at home, in the workplace, or on campus. While professional counseling … Read more

Summary: UCLA scientists have developed a method to convert human pluripotent stem cells into sensory interneurons, the spinal cord neurons that underlie touch and body sensation. Source: UCLA. Researchers at the Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research at UCLA have, for the first time, directed human stem cells to … Read more