I think you would be wise to show them to your GP, your Endo, your DEC practitioner or dietician. I'm not on LAWL, but understand that they are pretty high in carbs, especially simple sugars. If your professional team advises against using the lites, I would imagine that LAWL would allow you to discontinue them without negating your contract?
And here we go for 2009 . . . Onward and Downward . . .