I know potatoes are nightshades and people generally recommend to avoid them if you have an autoimmune condition. I am not officially diagnosed with any autoimmune conditions but I do have rosacea, which might be caused by autoimmunity. I have been eating lots of sweet potatoes to keep my weight up but they seem to completely destroy my colon, and give me terrible gas. Potatoes, however, don't cause this. In the comment sections of one of Paul Jaminet's articles he states that the nightshade toxins are in the potato fruit but not the tuber, and I was wondering if there was any truth to this?
The problem is the glycoalkaloids in the skin, they are toxic and cause irritation of hte GI tract, so if you are eating white potatoes you should probably peel them.
Give it a try. Some folks do fine on potatoes, some don't. In my experience, those with rosacea also tend to do better when there is meticulous attention to sufficient A intake (from liver once a week or so) and C intake (from lots of plants, some organ meats aside from liver).
It also may be worth avoiding excessive muscle meat consumption due to the inflammation that can come from excessive methionine and tryptophan consumption, balancing muscle meat and organ meat intake - maybe half of each? Getting plenty of zinc from oysters maybe once a week (depending...experiment) and drinking plenty of cartilaginous bone broth. The glycine is necessary to balance the methionine and tryptophan from muscle meats.
White rice might also be a good choice if you need the starch to keep your weight up. Be sure you're getting lots of probiotic foods (make some fermented veggies) and realize that some gut distress can come with any new dietary changes simply because it takes the gut flora time to adapt. I think it took me 6-10 months to adapt to "more" coconut milk and coconut oil. Until then, I could tolerate very little.
I'd do the "cut everything out and once you're completely fixed slowly add things back in and see if they cause problems" approach. There's no way to tell what affects you without getting completely better and then testing to see what affects you.
Some persons who are adapted or thrive on a starch-free existence will most likely have some issues with processing starches. In starch-free paleo I have no gas, but when I introduce starches (rice/potato) I become gassy. This is after eating all of the "known" gasmasters, i.e. eggs, broccoli, apples, etc (none of which have ever, in absence of starches, have given me gas).
I became gluten free over a year ago after being diagnosed with Hashimoto's. I just finished my first batch of bone broth. Loved it, craved the next cup each time! The gas and bloating stopped. I will not eat the starches in the future. I can tolerate gluten free oats with a little coconut oil in it just fine. I dont have the time and money to make the bone soup often, so will try the knox with apple cider. Hope the gelatin works too.