Being a 'Screen Slave' Will Mess Up Your Back And your neck, too, warns physiotherapists' group By Evann Gastaldo, Newser Staff Posted Jun 19, 2012 1:11 PM CDT 2 comments Comments The number of people who continue to work on tablets and other devices after leaving the office is of "huge concern," says Dr. Helena Johnson, chairwoman of the Chartered Society of Physiotherapy. (Shutterstock) (Newser) – Perhaps you heaved a huge sigh of relief when you heard that your cellphone probably isn't giving you cancer, but we have bad news for you: Spending all day staring at a smartphone, tablet, or laptop is still harmful to your health. A new study by the Chartered Society of Physiotherapy finds that nearly two-thirds of those surveyed kept working on such devices for more than two hours after leaving the office, and the society warns that hunching over phones and tablets as "screen slaves" can lead to physical problems. "While doing a bit of extra work at home may seem like a good short-term fix, if it becomes a regular part of your evening routine then it can lead to problems such as back and neck pain, as well as stress-related illness," says the chair of the group. "This is especially the case if you're using hand-held devices and not thinking about your posture."