I just realized that I did not answer one of the questions. Yes, my friend has spent many years on and off low cal diets. She was a weight watcher for many years, would lose the weight, and as soon as she went off the diet, it would all load back on with a few addtional pounds. The old yo yo routine.
Does this impact how a low carb diet will work for her? In what way?
She is not entirely discouraged, because at least she has not put on any weight and she does recognize this as a way she can eat
for the rest of her life - she's happy about that.
I will pass on your ideas so far, and check back in a day or so.
Thanks again.