Biggest Loser Asia: Did David Lose Too Much Weight?

Last night I watched the Finale Episode of The Biggest Loser Asia.  Once I saw the "final four" I was certain David would win.  He looked even thinner than Carlo, despite the fact that he started from a heavier weight.

Then the comments started flooding the BLA Facebook fan page.  People were saying David looked "sickly."

Was David's final weight unhealthy?  Let's look at the numbers:  David's starting weight was 157 kilos.  He dropped a remarkable 83 kilos and weighed in at 74 kilos.  At six feet tall, that means he has a Body Mass Index (BMI) of 21-22.  This is actually considered within the "healthy" range. 

But I'll have to admit--I was a bit surprised by David's appearance.  He just didn't look as healthy as the other contestants (many of whom had also lost and impressive amount of weight).  Maybe he was dehydrated, or maybe he was just drained from all the training he reportedly did.  It will be interesting to see if something similar happens next season.