imarried, i have read the thread but without an in detail breakdown of your nephews life, it would be silly for me to comment. i understand you feeling defensive about his position. i can only imagine how galling it must be to have a member of your family taunted for something that isn't his fault.
everything is everything you are absolutely right and on further research, the shimshal people are not as healthy as channel 4 had me believe, although it is true that they don't have the big 'lifestyle' diseases that kill people like we do, mainly down to their diet and exercise (climbing K2 for a start 
)
and puddlepuss that must be awful. but again, i don't know your personal life story so it is difficult to comment accurately.
all i am saying is that there are many many people out there who could eat less sugar, fewer carbs, fewer 'lower fat' alternatives, more fat, more protein, more raw vegetables and fruit and do ALOT more exercise and they would be healthier.
the PCOS comment also was not entirely accurate - but it can be controlled with diet as i understand it (that is what i meant), and all those people on that show start of fat, sweaty, spotty, breathless, unfit and unhappy and finish it shiny haired, active, slim, good skinned and most importantly, inspired and motivated to carry on and change their lives for the better.
and going against what i said earlier, having re-read the OP as i thought i was going totally of the point of the thread, as far as her anger goes, it must be annoying for her to see fat 30 year olds with self inflicted type 2 diabetes whining and moaning about how hard it is when her son has ended up with a life-long disease through no fault of his own. i can totally see her point.