What Causes Sudden Weight Gain When TSH Level Is 3 MIU/L?

Posted on Sun, 17 Jan 2016

Medically reviewed by Ask A Doctor - 24x7 Medical Review Team

Sun, 17 Jan 2016 Answered on

Fri, 12 Feb 2016 Last reviewed on

Question : I take nature thyroid My tsh was 3. But my t4 and t3 low. After starting the thyroid. My tsh went up. T4 lower and t3 much higher. I continue to gain weight and be constipated.

Answered by Dr. Shehzad Topiwala (4 hours later)

Brief Answer:
Thyroid

Detailed Answer:
I follow what you are saying. Nature thyroid medication tends to cause such blood test results. The fact is that most endocrinologists worldwide do not prescribe such so-called natural preparations of thyroid due to their inconsistent composition ie they contain variable amounts of at least two types of thyroid hormones (T3 and T4). This is considered unsafe. Levothyoxine alone suffices. I strongly encourage you to see an endocrinologist in-person to make a correct diagnosis if you truly have an under-active thyroid in the first place.

Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar