My last five years were as close as possible to a pure liquid diet. I lost 100 pounds.
I had weighed 360...360 of solid muscle when I was in my mid 20's playing football for a living...360 lbs of fat as I aged. By the time I quit I was down to 267...without even trying.
I do NOT reccomend a half gallon of gin a day as a diet method.
BubbaBob