The Relationship Between Type 2 Diabetes Mellitus and Related Thyroid Diseases

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Amity Island

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Relationship to Diabetes
Type 1
Diabetes and thyroid diseases are caused by endocrine dysfunction and both have been demonstrated to mutually impact each other. Variation in thyroid hormone levels, even within the normal range, can trigger the onset of type 2 diabetes mellitus (T2DM), particularly in people with prediabetes. However, the available evidence is contradictory.

The purpose of this review is to understand the pathological relationship between thyroid-related disorders and T2DM.

T2DM in thyroid dysfunction is thought to be caused by altered gene expression of a group of genes, as well as physiological abnormalities that result in decreased glucose uptake increased, splanchnic glucose absorption, disposal in muscles, increased hepatic glucose output. Additionally, both hyperthyroidism and hypothyroidism can cause insulin resistance. Insulin resistance can develop in subclinical hypothyroidism as a result of a reduced rate of insulin-stimulated glucose transfer caused by a translocation of the glucose transporter type 2 (GLUT 2) gene. On the other hand, novel missense variations in (Thr92Ala) can cause insulin resistance. Furthermore insulin resistance and hyperinsulinemia resulting from diabetes can cause culminate in goitrous transformation of the thyroid gland.

 
Interesting.
I had symptoms of low thyroid decades ago, tested but never diagnosed for years, until it was really bad. Took Thyroxine for a long time, stable at 200micrograms, but in the last year my medication has been reduced in stages, now down to 125micrograms, but this is the longest I have been consistently eating low carb in a long time, as I was badgered to eat high carb every year or so 'to lose weight' and then they'd get angry as I put on weight every month, and so I'd stop going to get weighed and go back to LCHF - but it seems that was bad for my thyroid.
 
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