Docs say “scary skinny” celebs are on a one way ticket to the morgue, The ENQUIRER has learned.
Yo-yo deadly dieting is as old as Hollywood itself and can be equally as deadly.
Cases in point: A skeletal Karen Carpenter died at 32 from anorexia nervosa complications specifically "cardio toxicity" brought on by the chemical emetine which was once available in the over-the-counter diet pill, ipecac – a form of "speed".
Anna Nicole-Smith, who battled years of yo-yo dieting, died after an OD of prescription drugs medications, including two for weight loss, when she died at  age of 39. 
Stars were often hounded by movie execs because they were too fat.
Child star Judy Garland popped pound-shedding amphetamines, dying at 47 of a barbiturate overdose. She appears a walking corpse before the end.
Now, medical experts say the realm of “scary skinny” dieting has gotten worse – much worse.
“More and more women and men are utilizing whatever they can do to try and stay thin. People are looking for a quick and easy way to cheat,” Dr. Reef Karim, a clinical professor at the UCLA Semel Institute for Neuroscience, told Fox News.
 “Their livelihood, their ability to be cast in a role, their entire way of making money is completely dependent on staying thin.”
Reef, has treated several celebrities, says cocaine and crystal meth are high on the list of preferred appetite suppressants.
One recent patient who constantly felt pooped and unable to lose weight turned to snorting meth.
"In the end, she had to be treated for a meth problem, and it all started 100 percent, because she wanted to lose weight,” Dr. Karim revealed.
In Hollywood, the axiom was once, “Live fast, die young and leave a good looking corpse”. Now, even the corpses are “scary skinny”.