permarexia 

Having the need to be slim. Seeing one self to be thin and at all times be obsessed to maintaining that body image.
Risking ones health in order to maintain certain body image is being permarexic.

Permarexia is the condition of a obsession with being thin.
She is obsessed with constant dieting she must be permarexic.

permarexia by Ozzicol November 30, 2007

permarexia 

When someone sticks to a incredibly low-calorie diet on a permanent basis.

Victoria Beckham aka Posh Spice is suffering from permarexia. Everyday she eats a low calorie diet and never strays from it.

permarexia by Very hot girl October 7, 2007

Pregarexia 

Women! Are you an Ardent Anorexic? Do you Believe in Bulimia? Are you worried about giving up your crazy ass eating disorder and gaining wait during pregnancy?

FEAR NOT!

Introducing Pregarexia!

Now you don’t have to binge and purge alone!!!!

You and your unborn baby* can crash diet for that size zero dress together!

* WARNING* this kind of crazy ass and totally selfish shit many (most likely) harm the development of your unborn child!!!

“During pregnancy I gained 25 pds but was maybe 8 pds over what was suggested for my height to start of with. It felt like the perfect amount.. she ate all the fat off my back and my belly was nothing but skin and baby.”

Sounds like your friend has a case of Pregarexia

Pregarexia by Andy The Great March 26, 2009