Dr. Donna Sergi, D.C. is a premier Holistic Chiropractor in Brooklyn, NY and Nutrition Response Testing Practitioner. Dr. Sergi at HealthierU is dedicated to helping people overcome pain and dysfunction related to problems associated with the spine, including low back pain, upper back pain, neck and shoulder pain, and sciatica. She uses Nutrition Response Testing is a non-evasive system of analyzing the body in order to determine the underlying causes of a health problem, non-optimum health or pain such as Acne, Asthma, Digestive Issues, Depression, Diabetes, Food Allergies, Severe Fatigue, Hair Loss, High Blood Pressure, Hormonal Imbalances, Hot Flashes, Insomnia, Menopause, Weight Loss, Psoriasis, Stress Relief and more .