Exploring the Brain, One Neuron at a Time

A major Alzheimer's risk gene appears to damage the brain years before memory problems emerge by triggering excessive neuron shrinkage and hyperactivity. The encouraging news: reducing a single protein called Nell2 in adult mice reversed these changes, suggesting a potentially preventable mechanism of cognitive decline.

Ozempic's weight-loss effect may work almost backwards from how scientists thought, activating rather than silencing hunger neurons in the brain. This counterintuitive discovery in mice could lead to even more powerful obesity drugs by targeting these newly identified cellular pathways.

Schizophrenia destroys brain connections in a surprisingly organized pattern, with the left hemisphere hit especially hard and a specific frontal region appearing to be ground zero for the damage. This finding maps the disease's progression at the synaptic level, potentially opening new intervention targets.

Waves of electrical activity constantly sweep across your brain, and they may be far more than background noise—they could be the fundamental engine powering perception and memory. These traveling patterns help your brain predict what's coming next and assemble your inner picture of reality.