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Dr. Andrew Rynne
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Dr. Andrew Rynne

Family Physician

Exp 50 years

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Fatigue And Hard To Lose Weight. Why Is TSH Low? Why Are There Hot Flashes?

Hi, I am trying to understand my test results- Here they are: Oct 2011- TSH 2.45, T-4 0.8 May 2012- TSH 1.09 T-4 0.9 Started 25mcg Synthroid then retested after 4 weeks on med. the results: June 15- TSH 0.67 T-4 0.9. My symptoms were mainly great fatigue and hard to lose weight. Also my Mother has been on Thyroid med for years. My Dr. just informed me that the Synthroid is not doing anything for me and I should get off of it and retest (a full thyroid panel including T-3) in another 4 weeks, also that I may need to see a specialist. I felt like I was not quit as tired on the medicine and could use a little more. She said it would make the TSH too low. It seems to me that the TSH has lowered even before I was on the medicine and then more so while on it. The T-4 seems to stay about the same on or off of the medicine. I will not see my (General) Doctor until mid August to go over the new test results, they will take blood work on August 3. Also, I am 43 yrs. old and have constant hot flashes. I am confused about what all of this means and am some what concerned. I would appreciate any insight you may have to offer. Thank you. Rhonda
Mon, 26 May 2014
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Neurologist,  's  Response
Hi,

Thank you for posting your query.

I have noted your symptoms. I understand that you are suspecting thyroid disorder (hypothyroidism) as a possible cause for your weight gain.

Regarding hypothyroidism, the typical TSH would be more than 4.5, and often in 20s or even higher. So, in your case, I agree with your doctor that they do not seem to be in the hypothyroidism range. However, I also agree that T4 is on the lower side.

I feel that you should get thyroid antibodies done to rule out autoimmune thyroiditis.

For weight loss, you should try diet control and exercises as the first option.

I hope it helps.

Best wishes,
Dr Sudhir Kumar MD DM (Neurology)
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Fatigue And Hard To Lose Weight. Why Is TSH Low? Why Are There Hot Flashes?

Hi, Thank you for posting your query. I have noted your symptoms. I understand that you are suspecting thyroid disorder (hypothyroidism) as a possible cause for your weight gain. Regarding hypothyroidism, the typical TSH would be more than 4.5, and often in 20s or even higher. So, in your case, I agree with your doctor that they do not seem to be in the hypothyroidism range. However, I also agree that T4 is on the lower side. I feel that you should get thyroid antibodies done to rule out autoimmune thyroiditis. For weight loss, you should try diet control and exercises as the first option. I hope it helps. Best wishes, Dr Sudhir Kumar MD DM (Neurology)