I actually did a very dirty version of OMAD, where I only ate once, but ate whatever I wanted when I did eat my lone meal. Only stipulation was if I wasn't working out that day, the meal be no more then 1200 calories. Lost about 23lbs (182-159) within a 4 month period, and never had any stomach/intestinal issues as well.
Only thing that did suck was I was very energized during the night so I couldn't sleep well.
Only thing that did suck was I was very energized during the night so I couldn't sleep well.