You could say something along the lines of:
"Hey, Friend, what's so good about weed? Why are you always smoking it?"
If he's smoking it for medical purposes, then just drop it, but if it's illegal and he's doing it to "look cool", then I would further ask questions about it.
blood vessels dilate, swelling occurs, phagocytes ingest foreign bacteria or viruses.
Answer:
Gain weight
Explanation:
Consuming more calories than you burn will result in a weight gain.
