Thyroid UK
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Magnesium .. Takes me from hypo-Thyroid to HYPER-Thyroid

Hi everyone ..

Whenever I take magnesium supplement or food high in magnesium, I will get hyperthyroid symptoms such as (insomnia, fast heart rate and high alertness ... ) as opposed to my usual hypothyroid symptoms. I know that magnesium increases the conversion of T4 to T3, but not sure what is exactly happening!

My diagnosis was not clear from the beginning, One doctor says, with suppressed TSH and normal T3/T4 you have (subclinical hyperthyroidism) while the other say it is secondary hypothyroidism based on all symptoms I have (low heart rate, shortness of breath ... ) I'm currently taking 100 mcg of Levothyroxine and feeling better.

For more info. on my test results, see my post: My Journey with Thyroid

1 Reply

Ali1101, Magnesium is supposed to relax and promote sleep but I'm not aware that magnesium improves conversion. If supplementing magnesium makes you feel hyper you should stop using it.


I am not a medical professional and this information is not intended to be a substitute for medical guidance from your own doctor. Please check with your personal physician before applying any of these suggestions.


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