Are you looking for a better approach to your healthcare?

Want a doctor who will take the time to listen?
Want a doctor who will find the cause of your problem?
Want a doctor who will get you real results?

We reverse chronic health conditions by treating your root cause

If you've been diagnosed with a chronic health condition and you've been struggling with chronic symptoms, then one of following two statements are likely true:

     1. You have a diagnosis and your doctor prescribed a medication to manage your symptoms

     2. Your testing didn't detect any problems and your doctor told you that nothing is wrong

If you are taking medications, then you may be experiencing unwanted side effects or you may be frustrated at the thought of taking a medication for the rest of your life because the medication is not actually correcting the problem.

If you don't have a diagnosis or have been told that there's nothing wrong, the truth is that your doctor simply hasn't run the right tests to find the problem.

This may seem obvious, but THE REAL PROBLEM is that if you haven't identified and corrected the root cause of your problem then you may never truly regain your health. Our Functional Medicine approach can help you find out what's causing your problems and correct them, so you can start feeling like yourself again.

Your Functional Medicine Doctor in Irvine and Orange County

Our Functional Medicine approach is focused on finding and correcting the root cause of your condition. We do this by utilizing the most advanced testing currently available and then designing a personalized natural medicine protocol to begin correcting these root causes.

The traditional medicine doctor typically takes a very segmented approach in which you have various specialists for each body system (ex: endocrinologist for hormones, gastroenterologist for the digestive system, rheumatologist for autoimmune disease). The problem with this approach is that no system works in isolation and you can't create whole body health by addressing only one system.

Our Functional Medicine doctor appreciates the fact that all the systems in the body work together.  We take a whole body approach when we design our treatment programs to create balance and optimize all your systems such as your immune system, hormonal system, and digestive system so that they can work together in harmony.

By taking a whole body approach that is holistic and personalized to your needs, we're able to achieve life changing results that would not be possible with an approach that is symptom based and that only addresses only one system of the body.

The Institute of Functional Medicine Logo

We Specialize in Hashimoto's Disease and Autoimmune Conditions

Much of our Orange County Functional Medicine practice is devoted to helping people with Autoimmune Disease to reverse their autoimmune triggers and reduce or eliminate symptoms so they can live a better quality of life. We have helped people with many autoimmune conditions including:

Hashimoto's Thyroiditis (our primary specialty)
Crohn's Disease
Ulcerative Colitis
Celiac Disease
Multiple Sclerosis (MS)
Rheumatoid Arthritis
Type 1 Diabetes and Latent Autoimmune Diabetes in Adults (LADA)
Sjogren's Disease

In a conventional medicine approach, the philosophy is that once you have an autoimmune condition, there's nothing you can do to reverse the process and the primary goal is to manage symptoms. This typically involves serious medications that suppress your entire immune system. These medications can be effective in reducing some of the symptoms, but there are consequences to shutting down your immune system and they can have unwanted side effects such as fatigue, weight gain, depression, infections, and cancer.

I think we can all agree that nobody wants to take immune suppressing drugs for the rest of their life, but unfortunately this is the only option offered by most doctors.

With Functional Medicine, our philosophy is that by correcting the underlying autoimmune triggers that caused the autoimmune attack that we can reverse the autoimmune process. The result is a reduction of symptoms, a reduction of the autoimmune process, and some cases remission. The presence of an autoimmune disease also significantly increases the risk of developing additional autoimmune diseases so removing autoimmune triggers likely decreases the risk of further autoimmune disease. We take a natural medicine approach that is holistic and our Functional Medicine doctor's goal is to help you work towards disease remission and we have been able to successfully help many patients lower and sometimes normalize antibodies, reduce or eliminate the need for medications, and become symptom free.

Are you ready to upgrade your health?

We provide a predictable system to get you healthy


We use the very best testing to find the real underlying causes of your health condition


We design each treatment program specifically to address your unique needs


We guide you through every step of the way to regain your health

Results for life

We show you how to maintain long term sustainable results

Delivering results and changing lives

See what our patients are saying about us

"I'm already beginning to feel better than I ever thought I could"  

I honestly cannot say enough good things about Dr. Steve Hyjek. I came to Dr. Steve about two months ago with a new diagnosis of Hashimoto's Thyroiditis and a diagnosis of Polycystic Ovarian Syndrome that I'd had for years. I was experiencing numbness and tingling in my face and hands. I was putting on extra weight although I hadn't changed my lifestyle. My energy was so low that I constantly needed a nap--and a lot of caffeine. I constantly felt like my brain was foggy and it was hard to concentrate. I had chronic neck pain that three other chiropractors and regularly massage therapy had done nothing to alleviate. I had bloating and digestive issues. And I was experiencing high levels of anxiety even though my life was relatively calm. Frankly put, I was a mess.

Dr. Steve was very thorough in the tests he conducted before treating me--and I really appreciated that. Because of his thoroughness he discovered I had a parasite (yikes!) and a condition known as Adrenal Fatigue in addition to my Hashimoto's and PCOS. He also noticed my head was positioned an inch and a half forward of where it should be causing it to put 30 pounds of pressure on my neck (no wonder I had chronic pain!) Within 30 days of beginning treatment with Dr. Steve, my head was successfully moved back half an inch, reducing the pressure on my neck noticeably. My brain fog was completely gone, my anxiety greatly reduced, my numbness and tingling almost non-existent, and my energy levels so improved that my husband actually looked at me and said, "It's so nice to see you being who I always knew you were inside." I'd lost some weight too--and felt like an entirely new person in many ways.

Because of the extent of my ailments, I will still be seeing Dr. Steve for a long time to come. But I couldn't go another day without singing his praises because after such a short amount of time I'm already beginning to feel better than I ever thought I could. If you're thinking of giving him a call, don't hesitate. Do it right now.

- Shannon

"He treats the cause, not the symptoms"

Dr. Steve is amazing!!! I was recently referred to him from a friend from home in MN where he had a very well established practice. I have had several adjustments from him now and feel very confident in his abilities. I even have him adjust my little 1 year old girl. I normally go to a chiropractor that does the same adjustments to me every time I see him....Not the case with Dr. Steve! He adjusts me differently every time based on my chief complaint. He also has a large bag of tools to assist a low level tissue laser. so cool! That has worked wonders on my husbands sprained ankle!

He is a wealth of knowledge as well! He is always telling me about new research that is out. And on top of all that, he is working with my on my weight loss goals....and not just with another silly diet. He is looking at my HORMONE levels! He treats the cause, not the symptoms.  He treats everything from cholesterol to depression. Try him out, you won't be disappointed!!

- Chrissy

"Within a couple of months I was close to symptom free for the first time in over 2 years!"

I am relatively new to the area and found Dr. Steve during a search for a Functional Medicine practitioner in Orange County.  I worked for more than a year with endocrinologists, my GP and endured lots of tests.  I was finally diagnosed with Hashimoto's and honestly these traditional practitioners were unable to help alleviate any of my symptoms.

As a 53 year old woman, I came to Dr. Steve with chronic joint pain, low back pain, general edema, fatigue and insomnia.  Within a couple of months I was close to symptom free for the first time in over 2 years!  His approach to diagnosis and treatment was clear and easy to follow.  I've always been skeptical about using supplements, but I can actually feel the benefits of the treatment program I've been on.  I also appreciate how open to feedback Dr. Steve is - he doesn't force a particular approach if it isn't working for me.  He is very well read and always seems headed to the latest training or is talking about some recent research that could have bearing on my treatment.

Finally, I'd just like to say that Dr. Steve is one of the nicest people I've worked with in any capacity.  I couldn't recommend him more, whether it's for a routine adjustment or a full workup.

- Andrea

"After 7 years of feeling like crap I feel like I have my life back."

What can I say. Dr Steve is an amazing doctor who knows his stuff. He goes out of his way to help make you feel better and get on track. He doesn't try to push meds on you but makes recommendations so you can decide unlike other doctors. He listens and truly cares. I have a ton of autoimmune issues. He helped discover my root cause. Because of him; after 7 years of feeling like crap I feel like I have my life back. I have only been seeing him for 2 years and you know what? I feel fortunate to have found him. His products are good, his advice is sound. If you want to feel better please go see him. He really is fantastic. I wish more doctors would do what he does.

- Jamie

"I am so grateful that I found Dr. Steve"

I am so grateful that I found Dr. Steve. I've been having autoimmune issues since college and have gone to a few holistic doctors that have helped me in some ways, but in some ways I was left dumbfounded. About 2 or 3 months ago after a really stressful couple of years, I walked into his office the sickest I'd ever been without really knowing what was going on in my body. He conducted a really thorough battery of tests and carefully went over my results, symptoms, and history. He listens more than any other doctor, isn't pushy, takes time to work with me on choosing supplements that don't include animal products, and goes out of his way to meet the needs of all his patients. His front desk staff member, Jen is so sweet, which is so refreshing. Her and Dr. Steve are extremely thorough in communicating when needed. This is an all around great office. I have already cleared my brain fog, gotten so much of my energy back, lost about 10 pounds of water weight, and am on the road back to myself again. Most of all, I was able to do it all plant based. I really appreciate his understanding of my conviction to not eat animals or animal by products. He is worth every penny!

- Jamie

"My symptoms either vanished or reduced to a random barely noticeable annoyance."

I found Dr Steve after I was diagnosed with Hypothyroidism, and all I got from conventional medicine was a daily pill (that I refused to take) based on a standard blood test that didn't even show whether I had Hashimotos or not. Nobody was interested in figuring out what caused my symptoms and treat the root cause, which to me should be the purpose of medicine, right? Thankfully, the internet introduced me to the notion of functional medicine. Dr Steve made me do a dozen tests that looked at what seemed every function of my body - an extremely important step because Hypothyroidism can be triggered by a huge number of issues. Medicine as it should be! And the results were astounding, which again proved the necessity to find the cause of the problem and not rush and mask the problem with a pill. I had problems with no direct symptoms pointing to them, so there was no way for me to ever know I had them unless I found a doctor who knew how complicated Hashimotos triggers could be. I keep going back to this point. He actually took the time to test all the possibilities!

It has been a little more than 3 months now, and my symptoms have either vanished or been reduced to a random barely noticeable annoyance. My main symptom was fatigue to the extent that I couldn't get up in the morning. This was the first symptom to go away. I sleep the same number of hours, but now it is enough, the need to constantly nap is completely gone. I couldn't be happier with my progress. And while I still visit Dr Steve on a regular basis to take care of the few remaining symptoms, there is no doubt in my mind that my choice was the right one and I found a great doctor!

- Iva

What would you like help with today?

Fix your pain

Fix your energy

Fix your thyroid

IBS Orange County

Fix your digestion

Diabetes Care Orange County

Fix your blood sugar

Our Functional Medicine doctor is conveniently located in Irvine in the heart of Orange County California

We are centrally located next to the John Wayne airport and serve patients from many neighboring cities including: Costa Mesa, Newport Beach, Huntington Beach, Seal Beach, Long Beach, Los Angeles, Anaheim, Tustin, Lake Forest, Aliso Viejo, Laguna Niguel, Dana Point, San Clemente, and Riverside.

We also work with many clients all over the United States as well as other countries. If you live out of town, we can work with you through phone or video conference.

Wondering if The Functional Medicine Center is right for you?

Maybe you have some questions you'd like to ask before making the decision to become a patient. Our support staff is happy to answer any questions you may have. You may also setup a free consultation with the doctor to help you decide if our approach is right for you.

Give us a call at 949-424-3962 or click the button below to schedule your appointment online


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