The Role of the Blood-Brain Barrier in Brain Health
Gut health and brain health are interdependent
The brain may be the body’s command center, but it’s also incredibly vulnerable. That’s why it’s sealed off by the blood-brain barrier (BBB) a tight-knit network of cells that acts like a high-security checkpoint. It lets in oxygen, nutrients, and hormones while blocking pathogens, toxins, and immune cells that don’t belong.
In healthy brains, the BBB functions like an invisible shield. But in Alzheimer’s disease, that shield starts to fail. Research now shows that BBB breakdown is not just a side effect of neurodegeneration it’s one of the earliest signs of the disease.
