My Functional Health
Root Causes. Restored Wellness.
Holistic approach to health and wellness.
Functional Medicine Nursing
Helping clients explore the root causes of chronic symptoms and take a whole-person approach to better health. My focus is on reducing inflammation, healthy hormone function, improving digestive health, supporting healthy weight management, restoring energy, and enhancing overall wellness. Together we will seek to understand your unique health needs and develop a personalized plan based on education and sustainable lifestyle strategies to support your health goals and achieve lasting results.
If you’ve been told your labs are “normal,” that your symptoms are “just aging,” or you feel like no one has taken the time to truly listen, you’re not alone. You deserve to be heard, supported, and empowered to understand the why behind how you feel.
Because feeling "fine" isn't the same as feeing well. Together, let's look deeper and discover what's possible when you address the root cause-not just the symptoms.
The Supplement Shop
Support your wellness journey with
professional-grade supplements from trusted brands through my partnership with Fullscript. Each recommendation is personalized to your unique health needs and features high-quality, bioactive ingredients backed by clinical research for quality, purity, and effectiveness.
Meet Amy
I’m a Registered Nurse with over 30 years of healthcare experience and a Board-Certified Functional Medicine Nurse Specialist dedicated to helping clients explore the root causes of their health concerns and restore lasting wellness.
Combining my extensive background in clinical bedside care with my experience as a healthcare process improvement specialist focused on quality and patient outcomes, I bring a unique perspective to personalized care.
I’m passionate about partnering with clients to explore the why behind their symptoms and supporting them on their journey toward restored wellness.
My approach is rooted in truly listening, looking at the whole person, and connecting the dots to better understand the unique factors that influence health. Together, we’ll create a personalized path that empowers you with the knowledge and tools to make meaningful, lasting improvements in your health and well-being.
Amy Castrillo, RN, BCFMNS
My Personal Journey to Wellness
My own journey to wellness began when I started uncovering the root causes behind health concerns I had struggled with for years. Identifying a magnesium deficiency and parasitic imbalance helped explain my chronic migraines, while improving my gut health and balancing my hormones made a meaningful difference in my anxiety and overall well being.
In 2025, after developing fatigue and shortness of breath, I was diagnosed with polycythemia (too many red blood cells). A simple but often overlooked lab test—ferritin—provided a missing piece of the puzzle and helped uncover an important part of my health story.
A key part of my journey was finding the right provider—someone who took the time to listen, look deeper, order the right tests, and interpret the results within the bigger picture. For years, important clues had been missed, not necessarily because the answers weren't there, but because the right questions weren't being asked or the right labs weren't being ordered.
These experiences transformed the way I view health and healthcare and deepened my belief in functional medicine. I learned that sometimes the answers are there—we simply need to know where to look. By uncovering root causes, connecting the dots, and supporting the whole person, we can create a path toward healing, restored wellness, and lasting health.
"Being strengthened with all power according to His glorious might so that you may have great endurance and patience"
Colossians 1:11
I’ve also learned that our struggles can become some of our greatest opportunities for growth and transformation. Healing is rarely an overnight process; it takes patience, perseverance, and a willingness to keep moving forward, even when progress feels slow. I’ve come to trust that steady, intentional steps can lead to meaningful change, and that God’s timing is not always our timing. My faith reminds me to trust the process, remain hopeful, and believe in the promises that there is purpose in the journey—even when we cannot yet see the whole picture.
I’m dedicated to helping you navigate your health journey with the same curiosity, compassion, and commitment to finding answers that guided me on my own.
I believe you deserve to be heard, understood, and supported. My goal is to walk alongside you, look deeper, and help you discover a personalized path toward restored energy, improved health, and lasting wellness.
"Dear friend, I pray that you may enjoy good health and that all may go well with you, even as your soul is getting along well"
3 John1:2