Steph -- Your experience seems to be counter-intuitive. The Soya oil based
margarine likely has whey in it. According to someone else on this listserv,
whey is 80% lactose. It is possible you are reacting to something other than
lactose. I am LI with some allergic reactions to milk and
intolerances/allergies to others. It's hard to tell with foods. Good luck
playing Sherlock Holmes!! <g>

Don



>When I make mashed potatoes using both soya margarine and soya milk I
>get a horrible feeling of bloating/indigestion.  However, if I just use
>soya margarine by itself on potatoes I am fine.  I am lactose intolerant
>but not soy intolerant (going by my tests