Thyroid hormone effects
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Low T3 effects on the cardiovascular system
When people think of cardiovascular symptoms and thyroid hormones, they usually think first about hyperthyroidism (excess thyroid hormone). However, hypothyroidism (deficient thyroid hormone) has an equally powerful effect on the heart and blood vessels. It can just be slower, more long-term, and less dramatic. Did you know? Heart failure occurs in hypothyroidism, too. (See below)…
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When is Low TSH not hyperthyroidism?
Q: When is a low TSH not hyperthyroidism? The answer is huge — in central hypothyroidism, in low T3 syndrome, in the first trimester of pregnancy… AND in cases where thyroid therapy achieves euthyroid status without causing tissue thyrotoxicosis. In many posts on this blog, we’ve detailed the reasons why TSH is a poor indicator…
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GRAPHIC and discussion: T3 Depletion
Illness as trigger of T3 depletion Science understands this process of T3 depletion as “non-thyroidal illness.” It has been called “non-thyroidal” because paradoxically, people with normal thyroid glands experience this deep, yet temporary hypothyroidism when they become very ill. It is believed that during illness, the body protects itself by lowering its metabolic set-point. The…
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Because Low T3 is hypothyroidism
The fact is, no thyroid hormone pill can ever replace a living, responsive gland. Each of us responds differently to orally dosed hormone replacement. Some of us do not convert T4 into T3 hormone very well, and science has known this for a long time. (See our page on Rationale: Reference ranges) If you experience hypothyroidism…
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GRAPHIC: 10 Thyroid Hormone Actions
This infographic gives you the basics on some important components of thyroid hormone metabolism and function. As thyroid patients, it helps us to collaborate in our thyroid therapy when we understand some of the scientific vocabulary and concepts. Lifelong therapy, lifelong learning.