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For the first time, scientists have mapped the genetic architecture of the brain’s communication bridge—the corpus callosum—using AI and MRI data from over 50,000 people. The study uncovered dozens of genes that shape this vital structure’s size and thickness, many active during prenatal development when the brain’s wiring is established.​ 

Scientists have built one of the most comprehensive single-cell maps of the developing human brain. The new BrainSTEM framework analyzed nearly 680,000 fetal brain cells to chart their growth and interactions, offering a detailed reference for studying neuron development.​ 

A large-scale brain imaging analysis reveals that our brains can forecast what kinds of messages will go viral. Researchers found that persuasive messages consistently activate brain regions associated with reward, empathy, and social understanding, predicting both personal preferences and public appeal. Interestingly, while emotional brain activity predicted message success in larger audiences, it did not

A new study identifies biliverdin reductase A (BVRA) as a crucial enzyme defending neurons from oxidative stress, acting independently of its traditional role in bilirubin production. Using genetically modified mice, researchers found that BVRA binds directly to NRF2, a master regulator of antioxidant defense, ensuring the activation of protective genes that maintain cellular health.​ 

A large-scale analysis of more than 130,000 adults with chronic insomnia found that long-term melatonin use—defined as one year or more—was associated with a striking increase in heart failure, hospitalization, and mortality risk. Using global health records, researchers found that melatonin users had about 90% higher odds of developing heart failure and were nearly twice

A global study of vertebrates reveals that body temperature is the key driver behind brain size evolution. Warm-blooded species like mammals and birds can maintain the energy demands of larger brains, while cold-blooded species are limited by fluctuating external temperatures.​ 

Researchers exploring risky decision-making in rats found that a specific reward-related neural circuit influences impulsivity and risk-taking in complex ways that depend on timing and biological sex. Manipulating the circuit during the learning phase of a gambling task altered risky choices differently in males and females, while manipulation after learning affected motor impulsivity in both.​ 

New research using fruit flies reveals that sleep loss can trigger both increased eating and sleeping—if the deprivation leads to energy depletion. Flies that lost energy while sleep-deprived compensated with extra rest and food intake, while those deprived without losing energy showed no such rebound.​ 

As daylight fades, many experience fatigue or low mood—but for millions, these symptoms signal seasonal affective disorder (SAD), a serious form of depression. Reduced sunlight disrupts serotonin, melatonin, and the body’s circadian rhythm, leading to feelings of hopelessness, loss of interest, and sleep or appetite changes.​ 

Japanese researchers have uncovered how the astringent “bite” of cocoa flavanols can activate the brain—even though little of the compound enters the bloodstream. In mice, the sensation of astringency triggered sensory nerves that stimulated neurotransmitters linked to motivation, alertness, and memory.​