I was 100% vegetarian for 17 years until an Alaskan cruise 10 years ago, when I added back fish/seafood. I did the CLEAN program by Dr. Alejandro Junger before my surgery because I was OD'ing on cheese, breads & sugars. Lost weight, feel great. I did the modified version, cooking soups rather than eating raw, but still felt wonderful & lost 20# in less than 2 months just eating almost like I normally do.
In that program, I did no refined sugar, no gluten & no dairy & felt SUPER! Nothing wrong with that!