Sounds like you have liver issues (not liver disease, just some problems with optimal functioning, which is quite common), and probably bacteria problem in your gut. VLF seems to give me a rise in inflammation, as evidenced by brain fog, sour/unstable mood, and irritable bowel issues. I don't get low blood pressure any more but when I was your age I did. VLF Peat, with all the sugar and fruit, sent all the problems I experience with VLF into overdrive. I do believe it is a kind of detox in that since the liver doesn't have to process meals with a bunch of fat in them it gets freed up to do other things. Also, fat is supposed sort of encapsulate some bacteria and its by products (called endotoxin, bad stuff), so maybe when fat is absent these baddies become liberated so they can circulate and cause problems. Or maybe it's just about the stored fat that's being liberated once we stop eating it in our diet. For most of us, a lot of stored fat is PUFA, and it also has toxins in it. Still a detox. I dunno. This is mostly just speculation, since what I read says that fat promotes inflammation but I tend to feel more inflammatory doing VLF for more than a few days at a time. But even with the problems, VLF is one of the best things I've ever done for my liver. There are things that are things I could suddenly tolerate after being VLF for a while that I could never tolerate before (like progesterone), because apparently my liver was too clogged up or whatever to do its job properly. Also, I went to a wedding one night and drank a bunch of alcohol and had no hangover the next day. Sight unseen. That hadn't happened since I was in my early 20's. Only explanation is improved liver function. Only thing I'd done differently was VLF. So VLF is very good for me and very bad for me at the same time. Catch-22. My solution is that I've been doing a detox protocol that can address all these issues that arise with VLF. Seems to be working although I'm still in the middle of it so can't really speak to long term benefits as yet. Since you're very young you might be okay doing simple detox measures like daily carrot salad. I would say that's something you should consider doing in perpetuity. If that doesn't cure it you might try adding in a more powerful detoxer like activated charcoal. Activeated charcoal kind of grabs onto toxins and endotoxins and binds them so that they don't circualate, and can be eliminated. If those two things don't work then there are other measures...reading around on the internet for detox ideas yields a ton of good (and also bad) ideas. But with your age I'd try those first for a while. It's likely a simpler fix for you at this stage. Good luck! The above might apply to you. I also find that VLF impacts the quality of my skin...skin seems drier and also a little "looser". Soles of my feet get a little rougher. I wonder if this may have to do with the detox and toxins blocking some crucial process that affects the lipid membranes of our cells. I don't think it has entirely to do with fat intake, otherwise everyone would probably experience the same problem and from what I read, not everyone does. I'm hoping that detoxing also fixes this, in addition to the mood and cognition problems. Time will tell. Point being, you might try something to detox you, see if it helps whatever problems you're experiencing.