but to dismiss the wrist units as "dodgy" is a bit like some of the other issues going the rounds here at the moment, it's dangerous to generalise about almost anything these days.
These devices are very useful, but notorious for giving innacurate readings, especially if not calibrated correctly and frequently. (But then again, so are humans.)
As for the dangers of the Medical and Health Forum, couldn't agree more.
Wonder how long it will be before someone suffers genuine harm as a result of poorly moderated advice.