Tiny Bubbles, Big Breakthrough: How Exosomes Carry Alzheimer's Treatments Past the Blood–Brain Barrier

Your brain consumes roughly 20% of your body's energy, meaning it relies on a massive network of blood vessels. To protect your central nervous system from harmful chemical swings and infections, the cells lining these blood vessels fit together like microscopic puzzle pieces sealed with airtight biological glue. This tight network is the Blood–Brain Barrier.