About the Author

KEITH BERKOWITZ, MD, is founder and medical director of the Center for Balanced Health in New York City and a former medical director of the Atkins Center for Complementary Medicine. He lives in East Brunswick, New Jersey.
VALERIE BERKOWITZ, MS, RD, is the director of nutrition at the Center for Balanced Health. Formerly a nutritionist at the Atkins Center, she also serves as a nutrition consultant to "Prevention "and "Men's Health "magazines. She lives in East Brunswick, New Jersey.