There is no such thing as a hypoallergenic cat. A protein called Fel d 1 is the root cause of symptoms in 90 percent of people who are allergic to cats. Bruce Kornreich, director of the Cornell Feline Health Center, said there is evidence that uncastrated male cats make more of it than females or neutered males, but all cats make this protein. Purina has released a new cat food that the company says reduces the amount of Fel d 1 that cats produce by 47 percent in three weeks. According to the Inquirer story, it's not known how much reduction in Fel d 1 is needed to alleviate symptoms in those with cat allergies, but the new food seems promising.
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