Physical Danger
For the most part, all an actuary has to worry about are the same things that can affect anyone in a sedentary position: soreness in your neck and back, eye strain from staring at a screen all day, carpal tunnel from all the typing.
However, since it's your job to assess risk, you've probably already invested in an ergonomic back pillow, an eye massager from Brookstone, and a typing robot you picked up from The Discovery Store. If anyone has a good shot at coming out of their career unscathed, it's you.