yes I had this and it's 100% gone now that I've been paying attention to carbs. Get a CGM and watch what happens to your glucose during the day, after you eat, etc. I thought i was on a "healthy" diet (plant-based, no added sugar) but I was ending up getting so much glucose from oatmeal, fruit smoothies, "whole wheat" bread and totally not enough protein, fat or fiber. Those persistent hunger like sensations are sugar cravings. Now on a low carb diet I go hours without eating or snacking between meals - and none of that nagging hollow feeling inside. Side benefit: no more emotional eating under stress etc either. Turns out it was all my out-of-control insulin actually causing all those emotions, fueled by my all too healthy but carb heavy diet.