I've never heard of anyone taking it that long. Was it even around 8 yrs ago? I guess if they did, it would have been off and on, because yes, it does lose its effectiveness--usually within a month. I have seen though that if you take a break from it, it seems to work again.
I loved Atkins when I was on it--really worked well. If you haven't discovered the Atkins support on the challenge thread, and the low carb recipes, you are in for a treat--especially the deep dish pizza, and the mock danish.
welcome and good luck!
