Yeppers exactly what Deirda said, it's the reprint of the original Atkins '72! It's the same copy I have but mine has a yellow cover!

Don't know if there's such a thing as "regular Atkins" b/c it's been up-dated several times. Each time they've tweaked the diet... all I know is the original A '72 version is what works for me.

As far as I know these are the different versions, if Imma wrong someone please tell me and I'll edit this list:

Original 1972 version
1992 version
2002 version
New Atkins for a New You
Atkins 20
Atkins 40

Wishing you much success on your journey to better health, IGonaBSlim!