this is an article about carrageenan:
http://www.drweil.com/drw/u/QAA401181/Is-Carrageenan-Safe.html
as far as what I eat, Jane - yeah, there's a LOT I don't eat due to a combination of bladder inflammation, and food allergies and I also avoid factory farmed meat.
My diet is plant-based, whole foods, non-GMO, no dairy, no peanuts. I eat apples, pears and blueberries, and most any veggie; raw nuts <no added sugar or oil>, fish, eggs and complex carbohydrates. Hemp or olive oil in place of butter and for a salad dressing.
Only hub and myself in immediate family; my folks also....but I've had dairy and other types of allergies for a long time, so they're used to it.
When my husband and I first met in college I was vegan, so he's had a lot of time to get used to it, too.
I bring a lot of my own food- and herbal tea to drink - to places when we're out, or if I go to a dog-related seminar for several hours.