Or drugs?

Or coffee?

The drug so popular no one thinks of it as a drug any more.

"One of these things is not like the others..."

What are the harmful effects of a full blown coffee addiction? Headaches?

What are the effects of an LSD addiction? Oh you can't, because LSD is anti–addictive. But it's still schedule 1 while coffee is uncontrolled.

Or sugar?

Cigarettes are drugs