I've noticed that there are two books by Dr Steven Price; one called SuperFoods, the other called SuperFoods Rx. I notice that Rx is older (Jan 04 as apposed to May04), but other than that I cannot find another difference. Any out there in Answer-land know the difference between these books?
Probably best to ask the publisher. I've had a book called Superfoods for nearly twenty years but by Michael van Straten and Barbara Griggs - I can thoroughly recommend it and find that much of the information they gave about eating for optimum health is only now becoming mainstream or acepted knowledge.