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What can affect TSH levels?

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Old 08-11-2008, 05:35 AM   #1
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Joeys80 HB User
What can affect TSH levels?

Hi everyone,

Just wondering if there is anything that can affect TSH levels, one week I was 6.0 and two weeks later I was 3.5 (not receiving any treatment).


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Old 08-11-2008, 05:57 AM   #2
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Re: What can affect TSH levels?

The absorption of iodine in diet (less or more) could have an effect [my personal viewpoint]

Old 08-11-2008, 07:08 AM   #3
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Cool Re: What can affect TSH levels?

It is my understanding that TSH can vary 2.0 - 3.0 points during the day. I believe it is highest early in the morning.

Normally, I do my blood work at the same time of day for this reason. For me that's first thing in the morning like 6:30 am.

Old 08-11-2008, 10:47 AM   #4
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Re: What can affect TSH levels?

For small variations, time of day can change TSH. Otherwise, varying levels of thyroid hormones cause varying TSH.

Either way - both 6 and 3.5 means you are hypothyroid. Why aren't you getting treatment?

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