Yes, I started this weight loss trek with a 14 day whole body cleanse (all natural, stimulant free).
Yes, I felt better at the end.
The cleanse I chose including fiber for bulking, natural stimulant free laxative to keep things moving, and a liver support to flush toxins. Combined with plenty of water, I spent a fair amount of time in the bathroom.
I didn't experience any major "side effects"... no major cramping or inability to function. I did have days when I felt a little "icky".
I don't recommend a fast cleanse (those 3 days whoozies)... you'll be in pain. I do recommend a more gentle cleanse... with plenty of water and possibly even combined with some fasting.
Repeat your cleanse every 3-6 months. That should be fun. :)
Oh, and I'm getting my thyroid checked... I have several symptoms:
Weight gain and difficulty losing weight
Sleepiness... OhMyGosh... I fall asleep at the drop of a hat.
Cold... all the time.
Thinning Hair... I kid you not.
I've done the research on natural dessicated thyroid... and plan to seek out a prescription. Now, it's just a matter of finding the time to get my kiester into the ND.