u/BenAwesomeness3

Hi everyone, my best friend (F-21) has recently picked up smoking. Now to my knowledge she doesn't do it much, but I (NB-19) really genuinely care about her wellbeing and want to see her healthy. I don't want to sound like an asshole, or like I want to make decisions for her, which I really truly don't. I understand that it's her life, and I totally respect that she can do whatever she wants. I, however, cannot shake the image of her slowly going further with drugs, or getting lung cancer, and I don't want to lose her that way. My father was diagnosed with stage 4 non-small-cell (non-smoking related, he didn't smoke) lung cancer when I was 9, and died of it when I was 11. It was, as one would imagine, incredibly painful to go through, and I don't want anyone I love (or for that matter anyone period) to go the same way. Some might call it an attachment issue, and they would probably be right. Anyways, I'm basically trying to ask how one would address this/ bring it up with said friend without sounding, again, like an asshole? Thank you all very much. Cheers