Is megan fox getting unhealthy?

I don't believe the tabloids, but supposedly her trainer said she has a quick metabolism and is just naturally skinny. I swear she looks sickly in one of the new Armani ad's. I could see her ribs at one point. Doesn't sound healthy to me. Again, the age old question...what message are we sending out to young people that are insecure about their appearance? I think there was even a European model that died from being to skinny within the past year, don't know the name. Now I will never know Megan Fox, personally I don't like her style of acting, but that is besides the point. She may look pretty to others, but she looks so much different (weight wise) in the first transformers (other than her plastic surgery). I am just wondering what others think. To skinny or just about right?