Why does smoking make people so skinny and cough so much?

[mttttittsttatm]

smoking what? gotta be smoking crack, cause cancer sticks and marijuana dont make you skinny. And the coughing is because the tar messes uo the lungs

[crackmama]

Arrrrrgh! Cough, cough yiiiiiiiiiiiiichoooo!

[NobodyWeirdLikeMe]

I smoke and I'm not skinny. I must be smoking the wrong thing.

[hhope4lyf]

Because they are killing themselves.

[HLR]

because its poison.

[«Justin«mmmàpŠm]

their lungs start turing black i heard

[mbrokn']

because it's smoke, not food nor vitamins..

[Zach]

cigs have so many chemicals in them.
That's why

[Halliee]

Is that why my sister is so skinny, and coughing?
She smokes, so I guess it is....

[Blacksky]

Smoking curbs your appetite-that's why so many people gain weight when they quit smoking-their appetite returns. I think the coughing is an obvious answer.