My DH jokes that when anything happens my family just happens to be experts on the subject (no matter what the subject) so when I got UC they went out and researched and researched and researched (yep - still researching). I get the - you shouldn't eat that or you should try this, you need to slow down, work less, rest more...from them. After 4 months of flaring post diagnosis many of them kept saying I should just have surgery. When I said that I didn't want to end up w/ a bag and the potential problems associated w/ that when I'd been sick for less than 6 months and was getting better it was like a light went on. I also have the (un)fortunate reality that my sister is a biomedical statistician for Abbott Labs so she kept asking/telling me about Humira trials.
The flip side is that I've been very open with everyone (work and personal) about the fact that I have UC (I disappeared from work for a month - people noticed). My description - bleeding ulcers in my colon, drugs to manage it for the rest of my life and watching my diet, stress, and exhaustion (I let them figure out the rest of it unless if they ask for more info - which most don't). Most of the time the result is that everyone ends up asking me how I'm doing, do I feel ok, am I getting better... After reading this I think I need to stop getting tired of answering the how are you doing questions and be thankful that I'm not getting the if you just (other than from some of my family members - but they are actually trying to offer useful suggestions that they've found and I've used some of them successfully).
I guess I look at the "if you just" stuff as people just trying to help and I take it all in and process it as I please. Some info goes in one ear and out the other, some stuff I actually try or research it in more detail to see if there's anything useful/worthwile in it.