gut-brain connection

Most people think good sleep starts in the brain. But research shows that restorative sleep actually begins in your gut. The trillions of microbes living in your digestive system, known …

Last updated : July 24, 2025 When stress becomes chronic, your body produces too much cortisol, the “stress hormone.” Elevated cortisol over time can disrupt sleep, increase anxiety, promote weight …

What Is the Gut-Brain Connection? Your gut is more than just a digestive system—scientists now call it your “second brain.” This powerful system, known as the enteric nervous system, contains …