Meet Katy Haldiman, MS, RN

Functional Health Nurse, Nutrition Educator, & Metabolic health specialist

Woman with surfboard on beach near a turtle.

Aloha, I’m Katy! I’ve been a registered nurse for 19 years. I learned early on in my nursing career that conventional health care, while incredible and necessary for some things, like emergency and acute care, does a woefully inadequate job of preventing and managing chronic disease.

When I discovered functional health as a way of addressing my own chronic health issues, I knew that this is what health care should be— proactive, personalized, holistic, and aimed at addressing the underlying causes of symptoms. I continued my education in nutritional therapy, functional medicine, mind-body medicine, and other holistic modalities. My desire to help shift the paradigm of health care in a positive direction, and to help women get truly well, led me to found Mana Functional Health.  

I believe your body has the innate wisdom to heal when given the right support. Whether you’re navigating blood sugar challenges, weight struggles, or energy crashes, I’m here to guide you with science-backed strategies and a functional approach—without crash diets or quick fixes.

I live on the beautiful island of Maui, Hawai’i with my partner, Shannon, and our rescue pets, Charlie (poi dog), Koi (calico cat), and Bobbie (tabby cat). When I’m not empowering women to make healthier choices, I can be found surfing, dancing, and spending time with my loved ones.

My Education & Training

✦ Bachelor’s of Science in Nursing (The Ohio State University, 2006)

✦ Master’s of Science in Nursing (University of Michigan, 2009)

✦ Exercise Physiologist (American College of Sports  Medicine, 2006)

✦ Nutritional Therapy Practitioner (Nutritional Therapy Association, 2012)

✦ Functional Medicine Clinician (Kharrazian Institute, In-Progress)

✦ Institute for Functional Nursing Member (2025)

✦ Institute for Functional Medicine Member (2025)

✦ Numerous other continuing education in functional medicine, holistic nutrition, functional movement, yoga, nervous system regulation, metabolic health, diabetes, and blood sugar regulation.

sliced lemons on light pink background
Aerial view of ocean waves crashing on rocky shoreline, creating white foam and turquoise water patterns.