The DailyMail reports
Blackberry email devices can be so addictive that owners may need to be weaned off them with treatment similar to that given to drug users, experts warned today.
Wow. The DailyMail Online goes on to explain that overuse can be damaging to mental health. But interestingly it doesn't say why. Let's speculate. Perhaps overuse causes severe memory loss, because without checking your iPhone -- I have an i Phone -- you realized you actually don't remember anything. You've given up remembering because you check your iPhone all the damn time.