Smoking?

smoking over the years will make your voice raspier. Not so much weed, but definitley cigarettes. Listen to Joni Mitchell in the 60s and then listen to her in the 90s...huge difference, and not only because of old age. She's been smoking since she was 9.

Anyways, I wouldn't be worrying about your voice so much as your lungs.

 

I have actually seen slide shows and stuff of what smoking does to your vocal chords! It's gross! Ok, your vocal chords are in a "v" shape....when we talk or sing or anything, they rub together and vibrate to make our voices. When you smoke, there gets to be this build-up of "gook" on those "v's," and then when they try to rub together, well, they can't as well. That's what makes smoker's voices sound so much more raspy. Blech.
The same kinda thing happens when you scream and yell a lot...you develop these kind of "cankor(sp?)" soars on them...and needless to say, that causes them to not work as well, either. Brian Adams and Julie Andrews both had surgeries to get them removed....we all know that Julie Andrews can't sing anymore because of it, and Brain Adams had to learn how to talk again...and you can hear it when he sings now.