SOZO

Holistic Nutrition

by Haley Castellano MSCN, CNS

HOLISTIC NUTRITION • FUNCTIONAL TESTING • QUALITY SUPPLEMENT DISPENSARY •

HOLISTIC NUTRITION • FUNCTIONAL TESTING • QUALITY SUPPLEMENT DISPENSARY •

Welcome to SOZO Holistic Nutrition by Haley Castellano, where we blend advanced, master-level nutrition counseling with the healing wisdom of naturopathic principles. At SOZO, we believe that food is not just nourishment—it is medicine and the foundation of lasting health and vitality.

Our mission is to empower individuals to achieve wellness through sustainable, personalized nutrition strategies that promote longevity and support the body’s innate healing abilities. Serving Massachusetts, SOZO is dedicated to providing holistic, compassionate care that addresses the root causes of imbalance, helping you restore overall health.

WHAT PEOPLE ARE SAYING

  • "I’d highly recommend Haley! I always appreciate her happy attitude. She is very knowledgeable and friendly, but she is not afraid to tell you the truth, either. She is an exceptional teacher and made me feel confident again."

    -Client K, 63

  • "In all my years of having ARFID I never came as far as I did with the support and guidance from Haley. She was there through the tears and the wins."

    -Client B, 29

  • "I would not have tried half the foods I did if it was not for Haley and I have never worked with someone that cared so much about ARFID."

    -Client A, 23

  • "Haley helped me so much. I had a lot of emotions and challenges with anorexia and she helped me understand the control I have over my life. Every question I had she had an answer to, or she would find an answer. I can go back to school because of her dedication to me."

    Client A, 26

  • "Haley has helped me tremendously. As a post menopausal woman dealing with stomach issues and inflammation, she has made a huge difference in my life. I am thankful for her kindness, wisdom and non judgmental manner."

    -Client C, 54

  • Haley has truly been a life-changing support in my journey with PCOS. Her wisdom, kindness, and unwavering dedication have helped me not only manage my symptoms but also feel in control of my life again. She sees and supports me as a whole person, something I’ve never experienced with any other healthcare provider. I’m beyond grateful for her guidance and care—she’s made such a meaningful impact on my health and well-being."

    -Client C, 29