She probably also eats lots of OTHER stuff: oil, butter/marg, processed convenience foods, etc. Perhaps meat and dairy as well!
It's necessary to do the WHOLE PROGRAM correctly, not just add starch to an existing poor diet.
Dr. McDougall is currently doing a study on MS and his eating plan. Many people w/ MS have seen improvements by switching to this WOE.
Actually, you can see benefits by adding starch to an existing poor diet. The starch displaces the other stuff. http://www.drmcdougall.com/misc/2011nl/ ... starch.htm
I'm thinking 1 cup starch probably isn't sufficient for most people. What is that, 2 or 3 servings, depending on the starch? Most folks, unless they're low carbing or dieting would have that in one meal.
I don't know about this woman's case, but I would think one could eat a VLC diet that only includes 1 cup starch and have it be "starch-based" as long as you're not also eating high-fat foods (nuts, seeds, avocado, oils) or tons of fruit.
It's possible that the types of starch the woman is choosing aren't right for her. She may have issues with gluten, for example. If she has a leaky gut (that's been linked to MS, I believe), that may play a part in it too. Any kind of food intolerance and/or digestive issues could be a factor.
"1 cup starch" is too vague to make any kind of meaningful response...unless we're talking about laundry.