Is modern life making us ill? Yes, say those who suffer from electrosensitivity. Are they cranks, asks Nicholas Blincoe, or should we all be throwing away our mobile phones?
Some claim to cure acne, others that they can identify melanomas. But do the thousands of health apps for smartphone and tablets launched each year have any real medical benefits? Dr Luisa Dillner investigates
From a fork that tells you when you're eating too fast to a skin patch that constantly monitors your vital signs, there was plenty of exciting kit on show in Las Vegas
As well as helping to track finances and organise social lives, smartphones are encouraging some people to monitor their health and wellbeing. Tim Lewis reports