Why So Many Thyroid Patients Fail to Recover on Levothyroxine (T4)

This is a great new blog post from Dr Tania S. Smith of Thyroid Patients Canada.

The post clearly spells out the reason why so many thyroid patients who are taking Levothyroxine continue to feel unwell. Levothyroxine is the synthetic version of the T4 thyroid hormone (also known as Synthroid in the USA).

Levothyroxine simply does not provide the same amount of T3 that healthy people have. On Levothyroxine, the thyroid patient often has higher T4 and lower T3 levels than healthy people. T3 is the biologically active thyroid hormone, so being deficient in T3 compared to healthy people is a real issue.

The research paper that Dr Smith bases her blog post on was actually published in 2011. So, this information has been with endocrinologists and doctors for a long time! However, treatment practices did not change because of the research!

The article fits totally with what thyroid patients already know and what so many doctors and endocrinologists refuse to believe: Levothyroxine frequently leaves some thyroid patients with remaining symptoms.

To make things worse, in far too many cases FT3 is not the primary thyroid hormone test that is being used alongside the patient’s symptoms and signs to assess the efficacy of treatment.

Something really needs to change with thyroid treatment. The current approach is based on false assumptions. It is a failed treatment paradigm.

The article is well worth a read:

Best wishes,


Paul Robinson

Paul Robinson is a British author and thyroid patient advocate. The focus of his books and work is on helping patients recover from hypothyroidism. Paul has accumulated a wealth of knowledge on thyroid and adrenal dysfunction and their treatment. His three books cover all of this.

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