Many substances and health factors can, independently of thyroid hormones, lower TSH secretion significantly. These factors are not listed in Braverman & Cooper's chapter on thyrotoxicosis in Werner & Ingbar's The Thyroid textbook, 10th edition 2013, because their chapter avoids defining the syndrome by a low TSH. Nevertheless, these TSH-lowering factors should always be mentioned … Continue reading Thyrotoxicosis? Many factors can lower TSH
Much confusion exists about the value of symptoms and signs in the diagnosis of thyrotoxicosis. The most common view is to dismiss symptoms entirely because each, considered separately, is "nonspecific" to thyrotoxicosis. However, there is no such thing as a "thyroid-specific" symptom because thyroid hormones have their effects in every organ and system of the body. What's … Continue reading Thyrotoxicosis: Symptoms and signs
Posts in this series July 2019 Thyrotoxicosis? Many factors can lower TSHThyrotoxicosis: Symptoms and signsThyrotoxicosis vs. Low TSHThyrotoxicosis can occur with high or normal TSH?TSH "can be very misleading" during thyroid therapy, say researchersHow TSH ultrashort feedback works, and antibody interferencePregnancy thyrotoxicosis vs just a low TSH due to HCG hormone REFERENCES Anderson, J. L., … Continue reading References for Thyrotoxicosis vs. Low TSH series
Surprise surprise. Having less thyroid hormone makes you more susceptible to Type 2 Diabetes. How does it work? Quote from Dr. Chaker, lead author: “Thyroid hormone is also directly involved in the control of insulin secretion and glucose homeostasis. Hypothyroidism is associated with decreased insulin sensitivity and glucose tolerance and treatment of hypothyroidism has shown … Continue reading Type 2 Diabetes and Hyper- versus Hypothyroidism
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 … Continue reading When is Low TSH not hyperthyroidism?