Re: Do I have a Thyroid problem? Please help me
You are hypothyroid because your free thyroxine and free T3 are below the midpoint of their ranges, because your TSH is higher than 2, and because you have classic hypothyroid symptoms. Even though the numbers are within the "normal" range, they aren't "normal" for you. How do we know? Because you're having those classic symptoms. If they were normal for you, you would feel perfectly fine and have a full head of hair.
Think of it this way: The lab ranges for the free Ts are representative of the entire healthy population of people who have no thyroid disease. Are you familiar with the concept of a 'bell curve' on a graph? If the entire healthy populations' "normal" numbers were to be plotted on a bell curve within the reference ranges, the high part of the bell would be in the center of the ranges... at the 50% mark... and that high point would represent the vast majority of peoples' need for thyroid hormone. As the bell curve dips downward toward the lower and higher ends of the ranges, that means that there are fewer people whose thyroid needs are met at those extreme ends of the scale. Perhaps 2%, more or less, of the population feels well when their levels are at the very bottom of the ranges. Maybe the same number has need for levels at the very tops of the ranges. You can see that, even though your levels are technically within the "normal" range, the odds are high that they aren't your normal, get it?
Here's another way to think of it: You have a particular shoe size within the women's "normal" size range of 6-10, and you cannot comfortably wear any other size within that range. A small percentage of women wear a size 6, and a small percentage wear a size 10. Most fall within the center of that size range, which is why you'll see more size 8 shoes of any one style sitting on the stockroom shelves of a shoe store than you will see shoes at the upper and lower ends of the size range. More women wear size 8; more women need their thyroid hormones in the center of the range. I don't know where your feet fit, but it's likely that your levels in the 30% area aren't enough for you.
If you can get a doctor to give you a trial of thyroid hormone, you've got nothing to lose by giving it a go.
Last edited by midwest1; 04-21-2008 at 01:12 PM.