I have hashimotos hypothyroidism with many thyroid hormone symptoms and I live in Evanston. I'm tired of taking medication and would like to try a natural holistic approach for my under active thyroid. What is the best way to begin care for my hypothyroid hashimoto's condition?

We require that each patient needs to have had a recent physical examination by an endocrinologist to rule out thyroid cancers, thyroid tumors and also to evaluate any thyroid nodules. Conventional endocrinologists generally won't support a natural approach to care. We can be contacted at (847)447-0023 or at


Will I have to pay a large case fee, before beginning therapy, in order to be helped?

No, we have various ways to make payments and you won't have to make a large lump sum payment for a case fee before starting. These are tough economic times and we try to help to get you the help that you need. 


Do I have have to follow a specific diet for my underactive thyroid?

There will usually be some form of diet modification that our hypothyroid patients will adhere to. Certain foods can limit progress, even if there are no obvious symptoms, after eating them.


How much do your treatments cost?

Support costs will depend on your individual findings. After an extensive review of your case, Dr. de las Casas will determine the course of support that is specific for your case, the cost involved and thoroughly discuss them with you. You will not have to pay thousands of dollars before starting and you will not be "locked" into months of treatment.


I have been using bioidentical hormones for the past three years and I'm interested in your weight loss program!
We are currently not accepting patients that are on bio-identical hormones.  It is difficult to establish an accurate baseline status when hormone replacement therapy is in use. This form of therapy can easily exceed the physiological hormone range and can cause a down regulation of hormone receptors, impair natural hormone synthesis, alter hormonal feedback coordination and can also lead to complications related to elevated hormones. One of our goals is to identify the underlying mechanisms of hormonal imbalances rather than just replacing whatever hormone appears to be deficient.


Do I have to stop taking my medications in order to receive care?

No, we will never tell any patient to stop taking their medications.  We recognize the difficulty of treating patients who are taking multiple medications and strive to work with any conventional specialist to enable the best possible clinical outcome.


Will I be accepted into Dr. de las Casas' program?

Not all patients will be accepted into our program. Dr. de las Casas will make a determination of acceptance  into his program after an initial evaluation.


Can I fill out my paperwork just before my appointment?

One of the most important elements in managing cases is a comprehensive and detailed health history. It is very important to know as much as we can about you and your case. Please allot a few hours to completing the initial documents. We require these documents at least 48 hours before your first appointment.


Do you prescribe medications?

No, we do not prescribe medications though we recognize that they might be necessary in certain instances. We support the body with high quality biomedical nutrition, lifestyle and dietary recommendations and our clinical procedures.


Will insurance pay for my care?

Insurance doesn't cover cutting-edge treatments for the management of functional thyroid and other complex chronic disorders. They may occasionally pay for a part of your lab test. You can't rely on your insurance company to consider the best interests of your health.

Why do you use Brain-Based functional neurology?
The brain controls everything in our body, so it should not be surprising that a body  that isn't healthy means that the brain is most likely not functioning optimally! In this day and age we usually wait until the brain degenerates, as in Alzheimer’s disease, before we recognize that there is a problem. We utilize brain rehabilitation programs that makes our care here unique! That along with metabolic and nutritional  therapy based on cutting-edge laboratory tests, not guesswork!


I was told that my lab tests are “normal” and that I don’t have any diseases, but I just don’t feel right. Can you help me?

A typical “normal” range that you see on a lab is very wide between two designated points.  If your lab tests fall between these ranges you’re considered “normal” because you don’t have a disease.  You can stop being "normal" with just a slight deviation higher or lower on the lab end range. This is why using an optimal range is important.

Disease occurs when your values are either too high or too low.  You have states of disease and no disease, but you also have a grey range of dysfunction between those two states where we’re losing control of body systems, but that might not necessarily be classified as a disease process. Our goals include supporting health through natural means before these lab values become too high or too low.


by Dr. Lee de las Casas


 Serving Chicago and the following areas:  Winnetka, Kenilworth,IL. Lake Bluff,IL. Wilmette,IL. Waukegan,IL.  Hubbard Woods,IL. Glencoe,IL.  Glenview,IL. Northfield,IL.  Northbrook,IL.  Highland Park,IL.  Evanston,IL. Wheeling,IL. Morton grove,IL. Lake Forest,IL Libertyville,IL. Gold Coast,IL. Geneva,IL. Vernon Hills,IL. Lincolnshire,IL. Buffalo Grove,IL. Lincolnwood,IL. Barrington,IL Lake Zurich,IL. Wauconda,IL. Niles,IL. Des Plaines,IL. Park Ridge,IL. Grayslake,IL Schaumburg,IL. Skokie,IL. Deerfield,IL. Arlington Heights,IL Lincoln Park,IL Elmhurst,IL Algonquin,IL  Fort Sheridan,IL  Hoffman Estates,IL  Carol Stream,IL Bolingbrook,IL Lemont,IL Naperville,IL Palatine, Mt Mount Prospect, Gurnee, Bensenville, Tinley Park and Oak Park,IL