Unhealthy Co-workers

I work with one of the unhealthiest, self-endulgent people I've ever known. She is also one of the sweetest people I've ever known, so I have to tread lightly. Even though my co-worker & I get along really well, I am so annoyed with her habits.

She has diabetes, a heart condition & a million other serious problems. Oh - and she's only 40 years old! She keeps loads of sweets in the office and tempts me with really fattening home-cooked meals. I usually find my way out of it somehow, but today was a very bad temptation day. She had another employee walk to McDonald's for her after I ate a healthy salad and she left it sitting on her desk for about an hour smelling up the office. I was so pissed. I even expressed that I didn't appreciate it, but she just doesn't get a clue. She loves to brag about how she only eats meat & no veggies, she drinks diet coke all day long & she laughs at people who exercise.

If anything else, she has taught me how NOT to be... but sometimes I just want to tell her how much I can't stand her unhealthy ways. I try so hard by bringing in my lunch & snacks, but that GIANT pot of M&M's just scream my name around 3pm everyday. I think I might put something gross in the jar like soap or spit on them. LOL... grrr!