Consumers can walk down the aisles of any supermarket and easily find nut-free, dairy-free, and of course, fat-free products.
Now another specialty food is appearing on grocers' shelves: wheat-free products.
They are a god-send to the growing number of consumers who find they can't eat wheat, rye or barley.
NHPR Correspondent Sheryl Rich Kern has this report on the growing market and the response by one very large company in Merrimack.