The Most Common Malady! The Shame Of Conventional Medicine!
Although growth hormone (hGH) is the hormone most associated in the public mind with anti-aging medicine, thyroid, by far, engenders the most interest from patients. As well, the anti-aging doctor’s use of thyroid replacement therapy causes the greatest anger from the rest of the medical establishment, especially from other doctors and pharmacists. I guarantee to you that this antipathy arises solely from the twin demons of ignorance and arrogance.
Hypothyroidism is poorly diagnosed and treated by conventional medicine. For this reason, once it gets around that the anti-aging doctor will actually treat low thyroid function with thyroid, and actually to the extent that low thyroid symptoms are completely reversed, patients flock to the anti-aging doctor for relief!
Once hypothyroid patients feel the difference between using true thyroid replacement and the conventional crap, they will no longer tolerate the conventional propaganda. Such patients even recognize and rebel against the scare tactics drummed into the heads of doctors in medical school.
When patients tell conventional practitioners of the benefits of using thyroid replacement therapy, the response is invariably denial and anger.
“The experts in a particular field can become so indoctrinated and so committed to the current paradigm that their critical and imaginative powers are inhibited, and they cannot ‘see beyond their own noses.’” 
The problem posed by these patients to the anti-aging doctor is that, in the main, these patients are not interested in compliance with guidelines concerning exercise, nutrition, and other hormone supplementation. These patients are not anti-agers. They are driven solely by the desire to remain escaped from the misery and stupor of hypothyroidism.
The following is an incomplete list of symptoms related to low thyroid function:
The great frustration of low thyroid patients
Low thyroid function has been estimated to afflict 9.5 % of the population.2 We anti-agers know that given age-related decline of hormone production, low thyroid function eventually affects everyone living long enough.
So, proper diagnosis and treatment of this malady is no small issue, whether we are talking about personal misery or the perspective of the loss of productivity to society.
What follows is a short description of the current state of affairs regarding the diagnosis and treatment of low thyroid function along with its rational counterpoint. For anyone curious about the history of this area, I can give you a short version of it in the following two sentences. Concerning the guilt of medical doctors, think of arrogance on top of ignorance and an infantile devotion to authority.
How Is Low Thyroid Function Diagnosed? Competing Points Of View
First, the conventional way......
Conventional medicine views the diagnosis of low thyroid function to be a simple matter of looking at the blood level of one hormone associated with thyroid function, the TSH or Thyroid Stimulating Hormone. The vast majority of medical doctors of all specialties except endocrinology are taught that measuring the blood level of this brain hormone is all that is necessary to obtain the diagnosis of low thyroid function. If the patient appears to have some complexity falling outside of this paradigm, then referral to an endocrinologist is in order. And actually, endocrinologists generally adhere to this simplicity as well, but act as the court of final appeal, the ultimate authority. If the endocrinologist says that you don’t have low thyroid function, then, by golly, you don’t have it. And this Supreme Court decision is almost always based upon on a simple blood test, the TSH.
So, What Is The TSH?
First of all, it is NOT a thyroid hormone! The TSH is the hormone that sends messages from the brain to the thyroid gland. If the brain perceives a lack of thyroid hormone, then the production of TSH can increase, resulting in a measurable increase in the blood. Such an event demonstrates the brain’s demand upon the thyroid gland to increase production. If the TSH decreases, then the brain is signaling the thyroid gland to decrease production.
Does this relationship always pertain? Nope! Too much complexity is involved. Patients with an elevated TSH can be said with certainty to have low thyroid function. However, those with “normal” or low TSH levels can have low thyroid function as well!
The problem is that medical students of the last two or three generations have been taught, by rote, that this brain hormone, the TSH, is an absolutely perfect reflection of thyroid function! What is the scientific basis of this robotic relationship? None! It is just an opinion. It is just an opinion that garners acceptance by virtue of repetition by those considered elevated in the field.
Bizarrely, the TSH is given such mystical powers that great efforts have been made to increase the accuracy of the TSH down to the 10-thousandths place, thus, somehow giving us a more scientific diagnosis!
I am not aware of any instance in which the “ultra-sensitive” measurement of the TSH has done anything more to benefit a patient.
Really, in health and in youth, you do not see a TSH greater than about 1.3 µIU/mL. Us Natural Hormone Replacement doctors typically refer to any TSH at 2 or above as abnormally elevated. That’s the short answer.
The American Association of Clinical Endocrinologists now state that 3 µIU/mL is the cutoff point between normal and abnormally elevated TSH (indicating low thyroid function) .
The basic problem with all of this attention to the TSH is that it distorts the significance of the TSH. Just remember, the TSH is NOT central to the diagnosis of low thyroid function. It has only peripheral significance.
In fact, the TSH has no specific or reliable correlation with thyroid function! 
Where does levothyroxine come from? Is it thyroid?
Levothyroxine is synthetic T4, the inactive form of the thyroid hormone. It is definitely not thyroid. Thyroid material contains T4, but also T3 (the active form, remember), T2, T1, and various other substances that support the effects of the hormones themselves.
Because of the lack of supporting substances, synthetic levothyroxine is infamous for not converting into T3. And T3 is the active form. You will read that T4 has a fraction of the activity of T3, but it is unclear if this means that T4 actually stimulates the thyroid hormone receptor site or that a small fraction of it is converted into T3 which then stimulates the receptor site.
“Levothyroxine is an inherently unstable drug, markedly affected by light, heat, & humidity. Although on the market for many years, it was not officially approved by the FDA until recently.”10 (The Medical Letter, Vol 46, Issue 1192, 9/27/04) In 1997, inconsistency in the stability and potency of various formulations of Levothyroxine prompted the FDA to reclassify all oral levothyroxine products as new drugs & require New Drug Applications from the manufacturers.11 (Thyroid 2003, JV Hennessey, 13:279)
“...these products fail to maintain potency through the expiration date, and tablets of the same dosage strength from the same manufacturer vary from lot to lot in the amount of active ingredient present. This lack of stability and consistent potency has the potential to cause serious health consequences to the public.”
“SUMMARY: The Food and Drug Administration (FDA) is announcing that orally administered drug products containing levothyroxine sodium are new drugs. There is new information showing significant stability and potency problems with orally administered levothyroxine sodium products.” 
FDA Notice, From the Federal Register: August 14, 1997 (Volume 62, Number 157)
Conventional Medicine Doesn’t Get It!
Dr. John C. Lowe, in his excellent book, The Metabolic Treatment of Fibromyalgia, says it well:
“When the experts can no longer see beyond their noses, the public has grounds for not believing in their science.
In recent years, steadily growing numbers of people have expressed the belief that the experts in conventional endocrinology can’t “see beyond their noses.” Why do people express this belief about the experts? Mainly for one reason:
The experts’ beliefs about thyroid hormone treatment keep many people sick.
And these people remain sick until they undergo treatment by practitioners who don’t share the experts’ beliefs. Obviously, the expert’s beliefs are wrong. Yet despite the continuing illness of patients and their subsequent recovery under the care of other practitioners, the experts hold tenaciously to their false beliefs. It is little wonder then that patients question the credibility of conventional endocrinology “experts.” 
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