I'm not advocating it for everyone, but it has worked for me. I'm 65 and am either sitting at my sewing machine or computer, so not much activity in my life. My husband found a 'study' online that I've adhered to for 12 weeks and lost 24 pounds. Stopped my Metformin (for Type 2) 12 weeks ago and eat 650 calories a day, my blood sugar was 187 and today it was 98. After a gastric bypass you only get 300 liquid calories a day. I eat very healthy, veges and fish/chicken, no sugar, no junk. Hope this helps someone else.