The thyroid gland produces hormones that control and regulate body metabolism, the chemical processes through which the body breaks down and uses energy.


The thyroid actually creates two types of hormone: triiodothyronine, known as T3, and thyroxine, known as T4. Only 10% to 20% of the hormone produced by the thyroid is T3, the active form. T4 is an inactive hormone that must be converted to T3 before the body can use it.

Millions of people in the United States have thyroid disease, both autoimmune (in which the body’s own immune system attacks the thyroid) and non-autoimmune. Different iterations of thyroid disease include Hashimoto’s disease (autoimmune hypothyroidism), Graves’ disease (autoimmune hyperthyroidism), and non-autoimmune thyroid imbalances. In addition, pregnancy and menopause can also affect thyroid function.

Thyroid disease is often misunderstood. Consequently, many people diagnosed with thyroid disease gain no relief from common pharmaceutical treatments. Millions more are never diagnosed with thyroid-related illness because routine test results are “normal” with other thyroid specialists in NYC.

Because of his unique approach to health and wellness, Dr. Kellman has treated thyroid disease with great success for almost two decades.


Following are common signs and conditions associated with thyroid disease:

  • Depression
  • Diagnosis of chronic fatigue syndrome or fibromyalgia
  • Difficulty losing weight
  • Fatigue
  • Hair loss
  • Lack of concentration
  • Sensitivity to cold
  • Slow metabolism
  • Weight gain

If you have any of these conditions, you may have a thyroid disorder, even if previous tests have had normal results.


Thyroid disease does not develop without an underlying cause. Many factors can contribute to thyroid dysfunction. At Kellman Center, our goal is to not only diagnose and treat thyroid disease, but to evaluate, understand, and treat the root causes.

We look deeper, to examine your physiology, your environment, your nutrition, and even your nutrigenomics, which helps us understand how your diet affects the expression of your genes.


Kellman Center uses a different, even controversial, test to evaluate thyroid function, the TRH Stimulation Test. Once the gold standard for detecting low thyroid output, this test was abandoned in favor of the routine blood tests that measure T3, T4, and thyroid-stimulating hormone (TSH), which is produced by the pituitary gland. Produced in the hypothalamus, TRH, or thyrotropin-releasing hormone, acts on the pituitary to stimulate TSH production. Injecting TRH to stimulate the pituitary allows physicians to see what’s happening in the pituitary gland.

We also perform tests to detect secondary indicators of thyroid disease, including procedures to identify bacterial overgrowth in the gut and tests to measure autonomic nervous system effects.


At Kellman Center, we blend art and science by examining all of the body’s systems and how they interact, including the gut, the brain, and inflammatory markers. By looking at their effects on other body systems and on biomarkers, we can see the downstream effects that are often missed by conventional testing.

Unlike regular thyroid doctors in NYC, we look deeper to diagnose each person as an individual, instead of relying on routine tests that identify conditions based on values determined by the population range. We get to know every patient; we recognize that the longer a problem persists, the less likely that a blood test will reveal it.


Identifying the deeper causes of a thyroid condition allows us to prescribe personalized treatments. Patients may be treated by one or more of the following:

  • Ashwaganda
  • Armour thyroid
  • Compounded T4/T3
  • Selenium


Why Routine Blood Tests
Dysbiosis and Thyroid Dysfunction—All Roads Lead to the Microbiome
TRH Stimulation—The Rarely Done Thyroid Test You Need
Are You Saying These Five Things—It’s Probably Your Thyroid
Low Thyroid in Men—Not Just a Woman’s Issue