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There is no permanent treatment for Hypothyroidism
.You are bound to take Thyroxine
supplement as long as you have low thyroid hormone values.Please visit your Physician and discuss treatment options if you are having side effects of the drug.
You should practice yoga
.Specific yoga aasanaa are said to be efficient in improving thyroid function.Please visit a Yoga specialist to know about them and learn to practice.
Hope my answer helps you.