I recently started to use a commercial soy and linseed bread which is popular here (Australia) for middle aged women. It was a bit too light and fluffy. Then I discovered a baker who bakes a very heavy sourdough soy and linseed bread. One slice per day is sufficient to keep MY bowels in good working order. Linseed is a natural and very cheap aperient/laxative. You can soak a teaspoon or two in water over night and just swallow them or mix with cereal. I would be interested to know if this helps PWP. And if any locals want to know the name of the baker (in south Fremantle) I will let you know. He makes other yummy breads as well and his bread is distributed around Perth. Joy Graham