As a writer, there are some occupational hazards you should be aware of. I'm sure you know about carpal-tunnel syndrome, eyestrain, back pain, etc. But have you considered these others?
Ink stains on all your clothes. (At least if you write by hand like me.)
Ink stains on your family's clothes, too.
Ink stains on the walls. (When you fail to notice your three-year-old sharpening a pen in the pencil sharpener right next to you.)
Other lost-track-of-the-three-year-old disasters (including, but not limited to, half an inch of water on the kitchen floor, a dozen broken eggs, toilet-flooding, etc.)
A tendency to space out in the middle of a conversation when a great plot point suddenly pops into your head.
Compulsive email checking.
Losing track of time and realizing you're ten minutes late for picking your kids up from school.
Accidentally posting on the wrong blog (like I just did).
Any others you can think of?