Hi Mal and welcome to the forum,
Ummmmm....no "A" word around here. Medifast and the TSFL program is NOTHING like that other "diet".
And no livestock allowed. (Laughing Cows...
)
Seriously, you can add a little of this, or a little of that anytime you want, but if it's not on the plan, you're in uncharted territory. These products and the plan have been formulated and designed by doctors and we find people to do much better if they follow everything closely.
Keep us posted,