New research reveals that sleep deprivation sends aberrant signals through the vagus nerve, triggering a serotonin surge that can kill gut stem cells.

A study published in Cell Stem Cell on February 5, 2026, traces a direct signaling chain from sleep-deprived brains to damaged intestinal tissue in mice, identifying the vagus nerve as the critical ...

By Hugo Francisco de Souza New neuroimaging research shows that when sleep-deprived people lose focus, the brain briefly ...

Sleep health is not equal among US adults, with new research implicating education level, age, body mass index (BMI), and lack of nutritional security as contributing to the racial and ethnic ...

Getting enough sleep is one of the most effective ways to restore metabolic balance in the brain and body. SimpleImages/Moment via Getty Images You stayed up too late scrolling through your phone, ...

Daytime “wash cycles” help clear waste from the brain but cause momentary drops in attention after nights of poor sleep.

Sleep deprivation doesn’t just leave you tired—it might be setting the stage for serious heart problems. While many people view sleep as optional when life gets busy, research increasingly shows that ...

DAY Health Challenge coach Dr Eddie Murphy has revealed the impact lack of sleep can have on wellbeing – and how new parents ...

If you’re over 50 and not sleeping as well as you used to, you’re not alone. Many older adults deal with restless nights, early awakenings, or lingering fatigue. It’s easy to chalk it up to aging. But ...

One key role of sleep involves cerebrospinal fluid, which surrounds and protects the brain. During sleep, CSF helps remove waste that accumulates during waking hours. In a 2019 study, Lewis and her ...

For decades, we’ve been trained to think about weight as it relates to physical activity—as in, regular workouts are key to maintaining a healthy body weight. Yet as scientists’ understanding of ...