At 500 cal/day you'll lose muscle and bone mass as well. But starving yourself hasn't taught you better eating habits. Wonder how fast folks who tried this gain all weight back - article quotes one lady who tried it, and gained all the weight back plus 15 lbs more.

Seems to me that starving yourself for a month would do really whacky things to your body, then it's even more confused if you start feeding it again. Hasn't anyone learned from the anorexics who have died?