People frequently have different TSH levels from blood test to blood
test. What factors might account for a TSH that is changing? Are there
things you may be doing that are affecting your TSH? Let's take a look
at some of the factors that can cause your TSH to fluctuate.
More detailed information on why
your TSH might be fluctuating and how
to prevent fluctuation is featured in this online guide.
- Change in Dosage -- changing your thyroid medication may change your TSH.
- Potency Fluctuations in your medication
- Lab changes or mix-ups
- The timing of when you take your pill
- Starting or stopping a high-fiber diet
- Starting/stopping calcium or iron supplements
- Eating too many soy products
- Eating too many goitrogenic foods, which include Brussels sprouts, rutabaga, turnips, kohlrabi, radishes, cauliflower, African cassava, millet, babassu (a palm-tree coconut fruit popular in Brazil and Africa) cabbage, and kale
- Change of seasons -- TSH can rise in the colder months
- Hormonal fluctuations
- Certain herbs/Supplements
- Certain prescription drugs
- Stress or illness
- Progression of your thyroid disease.