The biggest risk is to young girls

The biggest risk is to young girls, it fuels their weight obsessions adding to their delusions that this is 'normal' and healthy.The designers that choose these girls and encourage this look may just as well be putting up alcoholics swigging from a bottle of vodka or heroin addicts smoking crack up their on the catwalks - it's totally irresponsible!.

Yvonne says"I see recovering anorexic girls in my Harley street clinic and it's a nasty, vicious and spiteful disease that rob's girls of their self esteem and chances of long term health.
Young women come in with pictures of models and they say “I want to look like this.” They aspire to look like the people who are chosen to show off clothes.
A recovering anorexic would see women like these as a healthy body weight. And the tragedy, of course, is that not all anorexics recover."

Most of us could do with losing a few pounds to reduce the risks of heart disease, Diabetes, cancer, stroke, but by going to the other extreme these girls are risking all those usual chronic diseases plus osteoporosis , infertility and any chance of ever being mothers, Alzheimer's, arthritis and as soon as the bloom of youth runs out their skin will look likes it's been peeled off, screwed up and tumble dried and then stuck back on with blue tack

Lets face it there are only 4 ways to achieve a size 0 body that looks like this

1. Obsessively starving yourself - Anorexia or bulimia, depriving your body of nutrients
   
2. Dangerous drug abuse - depriving your body of nutrients
   
3. Obsessive exercise - Stressing the body and depriving the body of nutrients
4. Disease - A muscle wasting disease, parasite infestation or cancer that deprives the body of nutrients
   

The restrictions placed on calories mean it is very difficult to get adequate nutrients into the body for it to function properly - typically the reproductive system is first to go (as non essential) then the digestive detox system as the body goes into emergency short term crisis management mode to try and keep the brain and heart alive at least.

If the models drink alcohol, take drugs or smoke in addition to starving themselves then they are pretty much doomed despite Kate Moss's best efforts to prove otherwise.

The only way to remotely healthy on this low calorie level would be a dangerously low fat diet of vegan raw food but then only nutrient rich vegetables and no high sugar fruits such as bananas and no nuts. However without the essential fats from nuts and seeds they would still risk heart disease and hormonal problems and brain function as essential fats are needed for every cell membrane in the body. Vegans can get these from nuts, seeds and algae but these size zero models are often fat phobic so are likely to avoid essential fats along with detrimental saturated animal fats.