premise: Dr. Amy Joy Lanou, director of the Physicians Committee for Responsible Medicine in America, was quick to point out health dangers of the Atkins diet.
hypothesis: Dr. Amy Joy Lanou, director of the Doctor's Committee for Responsible Medicine in America, pointed out health dangers of the Atkins diet.
reason: The original passage says that Dr. Lanou directs an organization called the Physicians Committee for Responsible Medicine in America. It is not called the "Doctor's Committee for Responsible Medicine in America."