Your body really doesn't want to be in some states (because you'll die) so certain markers/metabolic disease states like NAFLD and pre-T2D MetS will lower drama

Your body really doesn't want to be in some states (because you'll die) so certain markers/metabolic disease states like NAFLD and pre-T2D MetS will lower dramatically soon after the insult (chronic overfeeding) is stopped. RCTs have shown dramatic improvements in as little as a week or two. In my case, both my elevated AST and TG numbers halved a month into making significant lifestyle changes and almost all my bloodwork continued to improve dramatically into my next labs at 9mo and 1y. That isn't to say there isn't accrued/long term damage, I think most people going through this sort of change will tell you that they are still dealing w/ health issues long term. I've notice that years after my initial interventions, my body still seems much more predisposed to weight gain for example - but trust me though, not feeling like crap is it's own reward. You can basically get used to anything and you don't really realize just how bad you were feeling (slowly getting worse over the course of a decade or so for me) until you turn it around.