Functional Medicine
Functional Medicine Services in Lancaster County, PA
Personalized Natural Health Care Located in South Central Pennsylvania.
Tired of being told “everything looks normal” when you know something’s off?
Looking for Functional Medicine in Lancaster PA? At Sheehan Natural Health, we help people uncover the real reasons behind persistent symptoms like fatigue, digestive issues, brain fog, chronic pain, and hormonal imbalances so they can feel clear, energized, and well again.
We use a root-cause, whole-person method often referred to as functional medicine, however we take it a few steps further with our effective assessments such as Nutrition Response Testing® and Nutritional Blood Chemistry™. Our goal is simple: help your body work better by supporting it with the right nutrition, lifestyle changes, and natural tools.
What is Functional Medicine?
Functional medicine finds and addresses the cause of disease, using the latest cutting-edge evidence-based, and science-based methods. It looks at the whole person, including nutrition, gut health, stress, toxins, hormones, and lifestyle to uncover why your body is out of balance.
Here is an example of how Functional Medicine works:
Problem: The patient is suffering from fatigue. Thyroid lab tests show low thyroid.
Functional Medicine solution:
Look for reasons why the thyroid is stressed. Perform detailed testing as necessary to determine the cause and explore what diet and lifestyle habits might be contributing to or exacerbating the problem. Provide a comprehensive recommendation that takes the whole person into account. The solution is collaborative. The patient takes an active role in his or her care. All recommendations are safe and natural. The doctor does not consider care a success until the patient actually feels better.
Contrasted with:
Conventional solution:
Provide medicine to bring thyroid numbers back into the normal range. The patient might not feel better, but the lab numbers are now normal, so the doctor considers her to be cured. Most of the time the only solution is medication and there is nothing else the patient can do to get better.
What type of care would you prefer?
How do I know if Functional Medicine is Right for Me?
- You are willing to collaborate with your clinician to track down the root causes
- You are willing to consider making changes to your diet and/or lifestyle
- You are seeking a long-term solution to what is likely a long-term problem
- You are willing to consider safe and natural therapies such as dietary change, nutritional supplements, stress reduction, and detoxification
- You are not likely to dismiss any possible cause of your problem, even if it’s not what you expected and requires some change on your part
- You are tired of clinicians who are relying on outmoded methods
- You want to get to the bottom of your health situation!
What Makes Our Approach Different
Instead of masking symptoms with medications, we focus on understanding why you’re feeling unwell. This process includes:
- Deep listening and a full health history
- Advanced functional lab testing (often beyond what’s offered by conventional doctors)
- Personalized nutrition and lifestyle guidance
- Ongoing support as your body heals and changes
We work with people who are motivated to take control of their health, and we guide you step by step, with clarity and care.
We use a unique functional approach by combining Advanced Lab Testing and Nutrition Response Testing to find the root cause of your symptoms. Our comprehensive lab panel is our roadmap to find root causes. Nutrition Response Testing shows exactly what nutrients your body needs while also providing consistant feedback each visit to show how you are progressing. You will not find this kind of care anywhere else.
All of our recommendations are completely natural and safe. We don’t use treatments that could possibly hurt you, such as surgery or drugs. The whole-food supplements that we use do not have side effects. This is the advantage about our therapeutic approach. We have developed this approach based on more than 20 years of clinical experience helping patients get well using safe, natural therapies.
Common Reasons People Come to Us:
- Persistent fatigue or low energy
- Brain fog or poor concentration
- Digestive problems (bloating, IBS, constipation, acid reflux)
- Hormonal imbalances or irregular cycles
- Sleep issues
- Skin problems, inflammation, and autoimmune flares
- Weight gain
- Sensitive to certain foods
- Mental health issues, including anxiety, depression, mood imbalances, etc.
- Feeling “off” even when labs look normal
Whether you’ve been diagnosed or not, we’ll help you make sense of what’s going on and what to do next.
Meet Your Functional Health Team in Lancaster County
We’re a locally owned natural health clinic in South Central Pennsylvania, serving patients from Lancaster, York, Harrisburg, and the surrounding areas.
Led by Dr. Keith Sheehan, DC, and Laura Sheehan, MS, who are functional health practitioners who bring over 28 years of experience in clinical nutrition, Nutrition Response Testing, functional blood chemistry, and root-cause wellness.
We’re proud to provide a caring, personalized experience that goes beyond conventional healthcare. Our patients value our functional medicine expertise, holistic lens, and whole-person support.
Questions People Ask Us
Do you accept insurance?
Functional medicine is not typically covered by insurance. We don’t participate with insurance providers, as our work is highly individualized and typically not reimbursed. However, many patients use HSA or FSA funds to cover services. We believe investing in your health now prevents greater costs down the road.
How long does the program take?
Everyone is different, but most people start with our 4-month program. Then at their re-evaluation, we usually order follow-up lab testing and provide a progress report and plan for long-term care moving foward.
What if I'm already taking medication?
The whole-food supplements we use are safe to take alongside medications without side effects. Our goal is to support your body naturally, and if any changes are needed, we will always refer you to your prescribing provider.
How much does the program cost?
If you have reached out to us through phone (717-392-6606), filled out the nutrition quiz, or signed up for a free phone consult, we will follow up with a detailed email addressing our process and cost options.
What is Nutrition Response Testing?
This is a non-invasive form of muscle testing that helps identify nutritional deficiencies, stressors, and imbalances in your body. We often combine this with functional lab work for a comprehesive picture.
What People Say About Us
“I presented to Sheehan Natural Health with a health concern that I had for quite some time and wasn’t getting any answers with via medical providers, as tests always came back negative. I’m now gaining an understanding of what is going on and what my body needs. Laura has been working with me using their three nutritional healing systems (Functional Medicine, Nutrition Response Testing, Designed Clinical Nutrition). I’m very pleased with the results and highly recommend Sheehan Natural Health. It’s been a pleasure working with all staff at the office – everyone is so personable, knowledgeable, and helpful.“
“A year later, I have more energy and less food cravings since being on the proper diet. I am weaning off my blood pressure medication (under my doctor’s supervision). I lost 25 pounds as well! Overall I feel healthier and more equipped to fight off viruses.“
“My medical doctor had told me that I had diabetes and I decided that the best way to treat my dietary illness was with diet. After taking gluten out of my life and taking the recommended supplements, I am now free of diabetes following my most recent lab work! Dr. Sheehan and his staff continue to take the time to do what is best for me individually!“
“Dr. Sheehan found a blood sugar imabalance on my blood test and explained to me how that could cause problems wit my corrective tissue and contribut to all my past health problems. I realized that I was just living to eat sugar. Physically and mentally I feel better. I’m eating less sugar and I lost 9 pounds. My pain is gone and I don’t need to take my medication any longer. I’m happier! Every night our prayer was for our health and I know this is the answer to our prayer. I just pray every day that I can keep it up and stay strong!”
“Sheehan Natural Health Improvement Center was very knowledgeable, friendly, and easy to work with. After finding underlying causes of inflammation, with appropriate lab work, they recommended supplements and dietary changes that have greatly improved my symptoms!”
“I had tried to get help from several medical doctors who said they couldn’t find anything and were very dismissive. At Sheehan Natural Health, I was heard and helped. They are all very knowledgeable and good at what they do. I’m getting better now and I’m so grateful for the natural approach to good health and this group of good, loving, and caring people who have helped me from the very first day.”
Is It Time to Take a New Direction?
If you’ve tried conventional routes but still don’t feel your best, we’re here to help.
Start your health journey now!
Are you tired of waiting several months to see a specialist? Then also waiting another few months to get your results back? We have openings set aside specifically for our new patients. Schedule your initial visit and receive your results to get started within 2 weeks!
Not sure if we can help?
Schedule a quick phone call with one of our practitioners to get your questions answered.