Here's an interesting article from USA Today Weekend about the correlation between clutter and migraines:
"It turns out that the same clutter that's distracting to most of us could be downright painful to people who have migraines. Scottish researchers studied the effect of 'visual noise' on people who have migraines.
When compared with folks who didn't get migraines, those who did were more likely to have trouble searching for and pinpointing a specific object when it was surrounded by other visual distractions.
The clutter might even provoke migraines by triggering whole clusters of nerve cells to become overactive, just like a muscle spasm.
Cutting the clutter not only helps migraine patients; it also relieves stress for everyone."
More on clutter and health: