Yes it works
Yes it works quite well once you follow the rules. It can be a challenge to get past your cravings and addictions for meat, refined foods and sugary carbs, but once you do it has worked for me. I have been following this way of eating for a couple of months now and have shed close to 40 lbs. I feel more energy and my mental fog has gone.
I am 65 and recently fell and crushed my left shoulder, had surgery followed by a lot of therapy. I don't plan to fall over again. Have been losing on average 3-5 lbs a week. Walk a couple of miles each morning and feeling good. Started out at 290 at 6ft 1in and am now down to 252. I do not get hungry between meals.