According to experts, 10 to 20% of hypothyroid individuals fail to respond completely to T4-only (levothyroxine, Synthroid) treatment. Dr. Anthony Bianco, the president of the American Thyroid Association, and his associates believe this is due to genetic variations in the way thyroid hormone is converted in the body from T4 into T3. T3 is the much more potent form of thyroid hormone and unless the cells of the body receive enough T3, normal function cannot be achieved and symptoms of low thyroid such as fatigue, mental fogginess, constipation, muscle aches etc, persist. Based on the research conducted by Dr. Bianco and colleagues it is thought that in those with the genetic trait making T4 treatment ineffective, blood tests would show low T3 levels. Continue reading
Why Patients Aren’t Receiving the Most Effective Treatment for Hypothyroidism
By Gary Pepper, M.D.
For the past 3 to 4 decades endocrinologists worldwide have adhered to the belief that only synthetic T4 (the most abundant of 4 thyroid hormones produced by the thyroid) is appropriate therapy for a sluggish thyroid even though it is known that a substantial number of those treated with T4 only continue to suffer from persistent symptoms of the disease. This may be because under normal conditions the thyroid produces two principle hormones T4 and T3. In 2013 an NIH study showed that 50% of those with hypothyroidism preferred treatment which includes T3 and our group reported that 78% of a subgroup of patients preferred T3 containing medication to treat hypothyroidism . Continue reading
In a blog at metabolism.com several months ago, website visitors were asked to join an email campaign addressed to Dr. Mack Harrell, President of the American Association of Clinical Endocrinologists (AACE). The purpose was to ask help reversing the existing practice recommendation # 22.4 published by the AACE in 2012, calling for a ban on the use of Armour Thyroid in the treatment of hypothyroidism. With over 800 individuals participating, the campaign appears to have achieved some success as the latest AACE treatment guidelines released last month no longer stipulate that desiccated thyroid is unfit for treatment of hypothyroidism. Instead the statement is issued, “ We recommend that levothyroxine be considered as routine care for patients with primary hypothyroidism, in preference to use of thyroid extracts. “, and…. “ Furthermore, there are potential safety concerns related to the use of thyroid extracts, such as the presence of supraphysiologic (unnaturally elevated, ed.) serum T3 levels and paucity of long-term safety outcome data.” Continue reading
I am often asked by patients with hypothyroidism (low thyroid hormone levels), “What is the right thyroid hormone dose for me”. Of course, a physician wants to find the appropriate dose of medication to treat each condition a patient has. When it comes to thyroid disease however, this can be a complex question. Not only is there an issue of whether T4 alone or combination T3 and T4 will be required to treat a particular individual but the therapeutic window of these hormones must also be considered. Continue reading
I wanted to update my comment with regard to Thyroid post op presentation.
I am now on 120 mg of Armour thyroid, and have been since about July of 2012.
The 2013 guidelines issued by the American Association of Clinical Endocrinologists and the American Thyroid Association reiterated their long standing opinion that only a single hormone, T4 (Synthroid, levothyroxine) is advised for treatment of hypothyroidism. These key organizations