How many celebrities take drugs?

All of them. Especially when you include ALL drugs, including the two most traditional and totally legal of America's recreational drugs: alcohol and tobacco (nicotine) - which are so well accepted that most people are shocked to even hear them described as being "drugs" which they are without question. Add these to all of the prescription drugs which seem ususually available in Hollywood, and then all of the illicit drugs too, and that smorgasbord of drugs probably covers just about every celebrity (with apologies to any rare exceptions).