I know it's necessary to have a certain amount of fat in your diet, but occasionally I hear about "good fat" and "bad fat." What is the difference? Is that the same as saturated/unsaturated? What foods have "good fat"? Can I tell by looking at the nutrition label on a food product which kind of fat I'm eating?

1) For as long as I can remember, I've had a fairly low appetite. I love food — cooking it, eating it, savoring it — but if it's not in front of me, I can easily forget about it. In high school, it wasn't uncommon for me to make it through a whole day without realizing I'd only had half a sandwich and a handful of M&Ms to eat. I'm living on my own and cooking my own meals now, but without predetermined family meal times, I'm struggling with portion control and meal planning. So many resources say that I should just "trust my body" when it comes to my diet, but my body won't tell me what it needs! Some days I feel like I'm packing too much food for lunch; other days, I completely forget about lunch altogether. How can I make sure I don't accidentally become a chronic under eater — or overcompensate and eat too much? When and how much should I be eating?

2) Lots of people worry about overeating. I have the opposite problem. I just don't get hungry. Some days I'll realize it's 10 pm and I haven't eaten anything in 24 hours, but I don't feel any need to have food. (At this point I'll usually make myself eat something).

I maintain a healthy weight, but I'm sure this habit of forgetting to eat isn't good. Do you have any advice for boosting appetite?

So I was in the store and I noticed a container of crumbled Gorgonzola cheese labeled "gluten-free." I thought all cheese was gluten-free. Do some cheese contain gluten or is this a marketing ploy?