depends how bad your eating habits have been for the past years of your life. If you've eaten fast foods, sugars, yeast products, and basically processed foods, yes, toxins can build in your intestines and bowels and line the walls and over the years can develop into diverticulitis. Yeast especially can enter your joints , sinuses, and just all over your body. Yeast needs sugar to multiply so by eating sugar you multiply the yeast in your body. Doing this cleanse, eliminating all sugars stops that process. I also drink a concoction of Bentonite, psyllium and caproil every morning for a few weeks every year and this cleans out the bowels, When i first started this cleanse years ago, yes , it lasted for over a month, but now that i've been eating healthy organic foods with no white sugar, flour or starches. I have almost no symptoms at all.
Hopefully you'll feel better soon, compared to how many years it took to build up in your system, 1 month is a relatively short time to clean it out
If it is a plant, eat it, if it comes from a plant, don't!