Here is my own personal experience-I started reading this because I saw the fiber discussion. I started increasing my fiber 3 months ago to decrease my LDL. Use Chronometer to track. I hit 30 grams MINIMUM a day and Lots of days 40 plus. Its fiber, it cant hurt right? Ha. I was doing psyllium husk daily, eating a keto “noatmeal” with hemp, chia, and flax and eating a flax seed bread several times a week, plus my vegetables like cauli rice, broccoli, spinach. First thing that happened was my GERD got totally out of control and I spent weeks getting that straightened out, then I noticed everytime I ate anything with erythritol in it my gut did NOT like that either. I have been using erythritol for over a year with no ill effects. then I got my labs drawn and not only did my LDL go UP-so did my A1c. Not by much-but it did. And I havent lost a single ounce in 3 months. The way I see it, the fiber affected my gut flora in an undesirable way causing these issues. My gut had actually been very happy on Keto for over a year and I was losing, A1c was great at 5.1, until the fiber. That little experiment is OVER. (and I will admit, when I started it, the rebel in me said “hey dummy-Doctors and nutritionists say this is good for you, do really believe that?” ) My personal experience only, but lesson learned as far as Im concerned.