It's opposite for me like some other guys. I loose "weight" and can't workout, drop like 45 pounds 2 months time without a gym, and people think I'm on my deathbed because I have no shape, "girl arms" and a pale look about me. That and I appear like I'm about to fall over any second. I hate how I tell people how horrid it was to lose so many years of progress working on fitness goals and it's gone in a few weeks time, and all they can think about is how cool it would be to loose "pounds" and not care about what kind of "pounds" they are or how they were lost. I've had the "contagious" comment before, makes me furious. It's so hard to regain lost progress twice after losing years of it, but I hate Crohn's bad enough just to spite it by not allowing defeat. So to that, I guess I can relate, I want to have my "shape" back, just like you women want your "shape" back...
As a male, I'll chime in that "weight" in women is not what some women seem to think it is...I find "supermodels" to be quite nasty, to be frank, because they have as many curves as a straight line, and have bones popping out all over. People like Kelly and the likes have a reason, they have had ordeals that were life-saving/changing....It's not that these "models" have it from Crohn's either (in my scenario, under this assumption), it's because "they" or the fashion industry, or whoever, thinks it's attractive to purposely get like that. Think Kiera Knightly or Angelina, they're disgusting...now think Scarlette Johannson or Kate Winslet... they're drool-worthy...the difference? THE CURVES... The butt, the hips, the breasts, the figure eight, hourglass, etc...
I'm not trying to say that it's necessary to be "attractive", because I know some of us (like me) just can't keep weight on temporarily and it all drops at our worst before we can bounce back...you women often miss your curves (I miss my muscle), and then get weight back and often you women feel fat. Again, getting sick and losing weight is an exception, because it's not your standard/normal situation, it's an exception and normally temporary, and lovely personalities more than compensate. You know it's not what you want, and didn't have a choice, just like with me, I don't want it to happen, but due to illness, my muscle/your curves are fleeting. The difference is supermodels usually have a choice (not all the time though), and believe it's sexy to be a stick, when most guys dislike that.
What's a problem is when a female is convinced that some stick-like figure is attractive because celebrity X only weighs X lbs.... and to that whole myth/belief, I ask you this: When you see adult film stars, what assets or shape do they have that makes them candidates for those movies? Who are the one's at Hooters restaurants bringing food to tables? Curves are sexy, and so is personality, and if a woman is missing both and assumes her body-like-a-board is sexy, it's just actually ugly. You women have personality left and know you will get your curves back, just wait it out.