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.
Marcy should not do it. Supplements don't make you lose weight, they make you lose fat, something your body needs. Excersising would be way healthier for her than supplements.
I would love to help answer, but i think i need a little more context here.
Answer:
it help keeps the virus from getting stronger as your body tries to create antibodies to kill the virus
Explanation: