Cognitive functioning

A stage of sleep – reflected in the size of our pupils – is important to committing recent memories to the brain, which could be manipulated to improve cognitive function and even identify issues with being able to recall newer experiences when awake.

Declining brain function is a natural part of the aging process, but that doesn’t mean it can’t be delayed. A new study found that physical activity can boost brain function for up to 24 hours and, independent of exercise, so can a good night’s sleep.

Injecting a natural hormone directly into the gut reduces the cognitive impairment that accompanies a stroke in the long term, according to a new study. The findings provide further evidence that a healthy gut means a healthy brain.