Northbrook, Illinois
900 Skokie Blvd.
Suite 140
Northbrook, Illinois 60062
Phone: (847) 272-8120

Advanced Allergy
Symptom Relief Success Stories

I went to a health expo where I came upon a booth that explained the benefits of Advanced Allergy Therapeutics. While still skeptical, I decided to give it a try and made an appointment at Essential Wellness of Illinois. I was wondering if this could really help me? I knew I had the symptoms of food sensitivities, environmental sensitivities, and seasonal allergy symptoms…you name, it I have it. I was experiencing digestive issues, watery eyes, runny nose, and exhaustion. I couldn’t even go outside my house because of the trees. After one treatment for trees at Essential Wellness of Illinois, no watery eyes, no runny nose, no sinus pressure, and no more feeling of tiredness, it really does work! It is nice not to feel sick all the time, and to have energy. To everybody that has the symptoms associated with allergies, we have hope. I know that it is hard to believe because I was someone who felt the same way. Chrissy Renz works very hard during the treatment. She is very accommodating to work with your schedule. Perhaps most importantly, she is one that truly cares for people!


I have worked with different holistic modalities for over 20 years both as a patient and a veterinary professional. Recently I began working with a colleague, whose opinion I value, with a protocol involving Advanced Allergy Therapeutics or AAT utilized at Essential Wellness of Illinois. The results have been remarkable. I am, or WAS, highly sensitive to fleas and their bites. In my line of work as a veterinarian working in an animal rescue, to say the least I was miserable for a good portion of the time. I have been treated all of twice, and even considering I am not fabulous at following direction post treatment, i.e. I never had the opportunity to avoid those nasty little critters, I have completely ceased the welts and the insane itchiness that used to be associated with exposure. AAT is certainly a viable alternative for alleviating the symptoms of hypersensitivities that can really affect the quality of life. I am fortunate that I don’t have a raft of these issues, but the one I did have I do NOT miss. I would recommend this protocol for anyone of any age with symptoms of ANY hypersensitivity. What a difference it can make!!! If we can promote AAT, think of all the dogs and cats given up due to symptoms associates with “Allergies” we could keep in loving homes.
Sincerely (While not scratching and complaining!!!),
Debra J. Rykoff DVM


The short story is: Christine Renz and AAT have given me my life back.

The details of the story are as follows: A stubborn, gradually increasing breakdown of the skin on my heels started after the birth of my first child 13 years ago, and despite numerous visits to various doctors, tests and medications, the condition grew worse. Then the itching started. A mysterious itch on my heels developed into a large skin rash on my legs, arms and chest, disrupting my days and robbing me of my nights. Previously a regular and vigorous exerciser, I was unable to move beyond the sofa at night, fatigue and the incessant itching having rendered any exercise, socializing or even calm contemplation impossible. With my arms and legs submerged in ice-cold water to bring down the itching to a bearable intensity, I pondered my future with a fair degree of trepidation. Was this what my future looked like? Doctors were "baffled" and medications offered only lead to worsening of my symptoms. Certain foods clearly brought on severe, uncontrollable itching, but despite narrowing my diet to only about 5 food items the symptoms continued. The stress and sleeplessness made my mood miserable and my outlook bleak.

Enter AAT. The initial assessment showed sensitivity to a variety of food groups, vitamins, minerals, and dogs. This form of treatment was new to me, but the underlying logic made sense and the complete lack of other treatment options sealed the deal. The treatments were pleasant and always left me with a greater sense of calm. At first I didn't notice any improvement. But then after the first few treatments, my energy returned and I couldn't wait to exercise every day! Even the skin on my heels started healing - for the first time in over 10 years! Session after session, my sensitivities gave way to the welcome freedom to once again eat freely, without the fear of the itching, rash and general malaise. Dogs no longer bother me, and I can use skincare products, vitamins and other products freely. My feet look and feel great, and serve me well even on long runs.

A few weeks ago I enjoyed a two-week vacation with my kids. I was once again able to travel and eat freely without worry, and I couldn't have felt more grateful for the gift of health I had been given.

AAT has been an absolute godsend and Christine is the best practitioner of AAT I have met. She is incredibly thorough, patient, compassionate and has an admirable ability to think outside the box. She is one of the most dedicated health care practitioners I have ever met, and as a health care practitioner myself I don't say that lightly. I can't recommend this form of treatment enough. Anyone with the slightest suspicion that allergies or sensitivities may play a part in their symptoms deserves to experience this elegant, effective and incredibly pleasant form of health care.
In gratitude,

Essential Wellness of Illinois has changed my life. For the past 30 years I have been coping with food sensitivities that included all fruits except at times a small amount of an orange, many vegetables including carrots, spices including pepper, and so many other ordinary foods. My symptoms included generalized discomfort and nausea that worsened over a day or two and which would eventually work into stomach cramps -- until the food had completed its journey. I also had noticed that my moods and emotions would be affected adversely when I ate those foods.

Whenever I was invited to dinner at a friend’s or family member’s home, those who knew of my issue had become used to asking me if I could eat what they were planning to serve. When I shared my limited food choices with a very caring cousin, he suggested that Chrissy Renz of Essential Wellness might be able to help. I will forever be grateful to him.

Chrissy listened carefully to my description of symptoms, and then she clearly explained the process and options for my treatment. Chrissy’s attentiveness and diligence combined with her expertise are truly exceptional.

To be honest, I was hesitant at first to try the foods that Chrissy had treated me for as I had experienced such debilitating effects from having consumed even small amounts of them in the past, including loss of work days. It is hard for me to communicate the joy and relief I felt when I realized that the treatments had worked!

My husband, an engineering-type, who was extremely skeptical about the possibility that the treatments might help, has often remarked on how much our lives have changed since I have been treated by Chrissy. My life is so much easier in so many ways, now that I no longer need to take such care about my foods.

I would like to share that at one of my visits I overheard Chrissy discussing with a client the possibility of treatment for various symptoms associated with emotional over-reactions. On my own initiative – and because the food sensitivity treatments had helped so dramatically, I asked Chrissy to work with me on those issues as well. After treatment, I should not have been surprised to find myself reacting to and coping with stressful situations more calmly. I continue to experience a personal level of confidence and comfort that I value in my ever-demanding and crazy everyday life.
Holly V.

Along with my Fibromyalgia came an array of food sensitivities. My food sensitivities were life changing...no more foods containing gluten, dairy or soy in addition to lots of other foods. I completely changed my diet and my life to accommodate these sensitivities and hopefully feel better. This wasn't an easy task because these foods are in EVERYTHING!

While receiving acupuncture at Essential Wellness of Illinois, I learned about Advanced Allergy Therapeutics (AAT) and was intrigued. Could this be the answer I have been looking for? Would it be possible to eat some "normal" foods again and still feel ok? I was excited to try it out but didn't want to get my hopes up too high.

It has turned out better than I could have ever asked for! I am eating all sorts of "normal" food again. I eat some form of dairy at least once a day without any of the issues that I previously had. I am able to eat a much wider array of food and go out to eat wherever I want because I don't fear that despite my vigilance an offending food is going to be served to me. Instead of being nervous about food, I am excited to go on my honeymoon next month and enjoy all sorts of great food. The best part is that I feel better, better than I did when I was just avoiding my problem foods. It is safe to say that AAT at Essential Wellness of Illinois has changed my life for the better.
Kelly L.


This is a letter to note my extreme satisfaction with the Advanced Allergy Therapeutics (AAT) treatment that I received at Essential Wellness of Illinois. If you have any symptoms associated with a food sensitivity run (DO NOT WALK) to seek treatment!
After 35 years of working with doctors and hospitals as a hospital executive and consultant, I am more than a bit skeptical of new healing modalities. However, I now find myself working as a Wellness Coach and help to manage a chiropractic office on the North Shore of Chicago which is broadening my horizons about innovative ways to get and stay healthy. Nonetheless, we recently learned of the AAT system and were intrigued by the idea of "treating the symptoms associated with food sensitivities, as well as the symptoms associated with many other types of allergies." In this day and age, that's not an insignificant proposal! But before exploring it further, I decided to get the ALCAT Blood Test to assess just how significant my food sensitivities were. For the most part, I am "a-symptomatic," but much to my surprise, the blood test indicated that I had 28 foods -- many which I love to eat -- that were either "Severe to moderate reactions”, with three foods falling into the "Severe Reaction to Whey: Cow's Milk, Goat's Milk, and Sheep's Milk." To say the least, I was surprised by the extent of my food sensitivities. 
Armed with these unsettling blood test results, I showed up at Essential Wellness of Illinois, the offices of Christine Renz, L.Ac., who is a Licensed acupuncturist that specializes in Advanced Allergy Therapeutics and practices in the northern suburbs of Chicago. Following our introductions, she immediately went to work. In total, she conducted 5 treatment sessions (over a 5-week period) aimed at the target foods and those that might be related to them. Following these treatments, I requested a follow-up Blood Test (against the advice of the ALCAT salesman who said I would need to avoid the offending foods for at least 9 months before the body could adjust.) Despite that warning, I received the results back and was stunned by the rapid reversal of the blood work. Of the 28 original items, there are only 3 left (Brazil Nuts, Cottonseed, and Brewer's Yeast). It is worth noting -- none of these three were a part of the targeted work by Chrissy Renz. Yes, it really does work -- seeing is believing!
I can't say enough about the excellent results, the power of this technology, as well as Chrissy's ability to get the job done efficiently, effectively, and professionally. She is an excellent AAT practitioner and I would encourage any and all who might be suffering from the symptoms associated with food sensitivities to seriously consider this approach, and please do so without delay.
 A votre sante!


Over the past few years, I began noticing that I would get nauseous and/or get a headache when I went to amusement parks, watched 3-D movies or even when we went boating. Thus, I started missing out on a lot of family fun. You can imagine how pleased I was to find that Advanced Allergy Therapeutics could help me with this. After only 2 treatments at Essential Wellness of Illinois, I’m back to enjoying these experiences with my family. My thanks go to Christine Renz-- I give her my highest recommendation.


Advanced Allergy Therapeutics is a surprisingly effective method of treating the symptoms associated with my long-standing allergy and sensitivity health issues.  Outside of an environment I could control, I noticed people, places, and things could have a detrimental impact on my well-being.  I would manifest characteristic symptoms such as head congestion, headache ranging from mild to migraine, inability to think and focus clearly, runny nose, watery eyes, and nausea.  With careful observation, I determined some of the offending items were tobacco smoke, perfume, vehicle exhaust fumes, paint, plastic and vinyl products, cleaning chemicals, and environmental pollutants.  Receiving the simple non-invasive treatments of AAT at Essential Wellness of Illinois was one of the best decisions I made.  Being able to release self-imposed restrictions to protect myself, I am confidently re-introducing into my life the items I previously needed to avoid.  I am ecstatic about expanding my world and simultaneously feeling healthy.


Great News! I have been able to eat bread again without experiencing my old digestive symptoms and becoming extremely sick for the first time in many years. In 1999 I was told I had IBS. Therefore, I have been avoiding gluten and wheat for years. I had to order my bread from a bakery in Florida and store it in the freezer. Also, I had to drive to the suburbs to go to the gluten free store just for items that the average person can get from their local grocery store. The price of items at the specialty gluten free store is extremely high in comparison to items on the shelves at a regular grocery store. I had to read the ingredient list on food items as well as external items (ex., liquid soap, makeup, lotions, etc.). Even going to restaurants is so much easier now that I don’t have to ask “does this have wheat or flour in it?” Additionally, I now save myself the embarrassment of asking the hostess at a gathering “what will be served for dinner? or having to say I can’t eat that.” I save myself money from specialty items as well as saving time, gas, and embarrassment. It should also be noted that I had digestive upset with corn and soy as well. After being treated, I can now include these items into my diet without a worry. I can’t wait to be treated for dairy! I really want to thank you, Christine Renz, for your patience and your hard work in treating the symptoms associated with my various food sensitivities, I wish I only knew about Essential Wellness of Illinois years ago.


If you always wake up in the morning with a 15 minute sneezing session, you will understand what it is like to be sensitive to dust mites. For years I have tried numerous recommendations involving mattress encasements, certain types of pillows, special washing procedures for linens, etc. Yes, they all provided some relief, but the problem still presented itself. I was then introduced to something that I had never heard of before—Advanced Allergy Therapeutics. I made an appointment with Christine Renz at Essential Wellness of Illinois. I wasn’t quite sure what improvements I would see, but was I surprised! After one initial treatment and one follow up treatment, my morning sneezing ritual stopped. Saying “thank you” just doesn’t seem enough to express what a difference this has made for me. Chrissy, I tell everyone about what wonderful services you provide!