Hello all! I recently got my genetic tests back, and was hoping to be able to start methylation. However, when I attempted to begin methyl b12 supplementation, I learned a very valuable lesson: I'm apparently scary low on potassium. You see, I'd been having symptoms like muscle weakness, headaches, muscle pain and the like for a very long time now (I've been pretty much bed-bound since last November), but I could never be sure if they were from low sodium, low potassium, histamine (I'm working on a mast cell diagnosis), or something else. However, with what I've read on this board, having those symptoms in response to starting methyl b12 is invariably low potassium, so at least I now have that answer. My problem is that I tolerate very, very few foods (5 right now), and when I try to eat any high-potassium foods, like butternut squash, I have one or more of three reactions: 1. I have what I call a "heart rollercoaster" effect. This is really weird, and hard to describe, but it's a very distinct feeling that I get only from high potassium. I can link it definitively to potassium because it first started after I was given potassium as a result of an ER visit. It is very scary, almost like my heart tries to stop, but then is re-started by a jolt of adrenaline, and it goes on for days, or until the offending food is eliminated from my digestive tract. 2. My body rejects it, via diarrhea. 3. I have a histamine reaction, for example with high potassium foods that are also high histamine like tomatoes or avocados. So I actually have two questions: 1. Has anyone ever had the same sort of "heart rollercoaster" reaction to high potassium foods? I'm talking about eating as little as one-two ounces to produce these effects. 2. Has anyone successfully overcome such a severe potassium deficiency to the point that they could begin methylation, and if so, how'd you do it? All suggestions as to what to study next are appreciated! I'm a voracious reader, and while information no longer sticks the way it used to, I usually eventually absorb what I need to. Thanks to everyone for being here. This forum has an incredible amount of information!