"Too much time spent texting, gaming and surfing the web can lead to a degeneration of the right side of the brain, affecting memory and attention span, the medics said."
Bollocks. Well maybe if we're talking about stupidly excessive use.
Spend all day on your phone, never doing anything active outside and not sleeping properly, and you'll probably start to see some negative effects on your health. Such negative effects will manifest in all sorts of ways, up to and including unwanted droopiness.