Why should people with rheumatoid arthritis not eat potatoes?

There are certain foods that contain certain "stuff" that aggravates things like arthritis. If you want a more detailed/specific answer, do a web search on Rheumatoid Arthritis and potatoes. (You can leave out the word, AND) There's a lot of info online about this. My brother has RA and tried the cave man's diet, or whatever it's called, which involved not eating potatoes and some other food. It didn't help. But everyone is different, so just because it didn't work for him, doesn't mean it wouldn't work for you. There are a lot of alternative health websites that might help with RA, too. If you haven't read about colon health, it's worth the time.