About Cristine Seitz, MS RD LDN

Practice Owner & Registered Dietitian

Hi, I’m Cristine — since 2012 I have been  helping clients navigate confusing nutrition advice and create lasting habits. As a Registered Dietitian, my approach is rooted in three core principles: 

  • Respecting your autonomy
  • Focusing on sustainable changes
  • Using evidence-based strategies. 

I believe you are the expert of your own body, and I’m here to provide guidance, tools, and support so you can make choices that truly work for you. Together, we’ll build clarity, confidence, and a positive relationship with food.

Work with Cristine

Personalized nutrition that works with your body—not against it.

Clients often come to me overwhelmed by conflicting advice or feeling stuck in patterns that don’t serve them. Together, we will shift the focus toward balance, confidence, and realistic habits. My goal is that you leave each session feeling empowered — with clarity about your next steps and a more positive relationship with food and your body.

Specialty Areas

  • Meal planning & balanced nutrition
  • Weight management, including bariatric surgery and GLP-1 support
  • Polycystic Ovary Syndrome (PCOS)
  • Diabetes management
  • Perinatal nutrition and gestational diabetes
  • Women’s health

Insurance Accepted

I work with most major insurance providers, including Aetna, Blue Cross Blue Shield, Harvard Pilgrim, Medicare, Multiplan, Mass General Brigham/Allways, United, Wellpoint/Unicare, and Wellsense. I am based out of Massachusetts, but I am licensed to see patients in several different states.

More About Cristine

Cristine earned her Master’s degree in Nutrition from Boston University and her Bachelor’s degree in Physiology from McGill University. She has worked as a Registered Dietitian since 2012,  combining evidence-based strategies with a compassionate, client-centered approach. She has worked with a wide range of clients, helping them make meaningful and sustainable changes to their health while improving their relationship with food.

When she’s not working with clients, Cristine enjoys the joyful chaos of life with her husband and two young children, spending time reading and cooking, and diving into the occasional DIY project.

What past clients say about Cristine

  • Cristine is incredible. She gives realistic, actionable steps to create a healthy relationship with food. I see Cristine for weight loss and I can’t imagine making progress without her. I’m pretty Type A and some of the most valuable progress I’ve made with Cristine is being kind to myself, redefining my relationship with food, body image, and exercise. Living without the huge food noise that I had before frees up so much of my mental energy and time, and I just feel so much healthier in general. I highly recommend Cristine as an empathetic provider who meets patients where they are at to reach their goals
    A.S.
    Past Client
  • I have worked with Cristine for about 4 years while going through my journey to better health and weight loss.  She has been creative, compassionate and supportive over the years through my process.  She listens and remembers my concerns and preferences and always offers realistic and concrete suggestions to assist me in meeting my changing goals.  Finally, she has been tremendously effective.  With her help I have lost just short of 90 lbs while avoiding many of the side effects that can come from substantial weight loss.  She is a wonderful professional to have on your team.
    S.G.
    Past Client
  • I have worked with Cristine for many years and can say that she truly cares about her clients. She really gets to the root of the problems and is good at coming up with solutions. I have learned a lot from her and she is always willing to meet me where I am at. Highly recommend working with her!
    SF
    Past Client

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