I'm writing this as someone whose worked in healthcare for 2-3 years and is a chronic pain patient themselves with numerous other disabilies - a lot of this article is pure crap. "Intermittent fasting" is also DANGEROUSLY close to disordered eating that no one wants to actually talk about.
You want to know how to "detox"? Take care of your damn liver, kidneys, and other organs whose job is just that. Do all the healthy things your doctors recommend (as good as a diet as you can manage, try to squeeze in exercise wherever you can, drink plenty of water, moderation is key with lots of things, and don't forget to get some fresh air) and you'll be fine, my people.