This is a scenario that I have seen come up quite a bit.
There are plenty of these types of supplements that you can find over the counter (or even on Amazon).
If you look online, you might even find people suggesting that these supplements can be used instead of thyroid medications.
That is because these glandular thyroid supplements come from the same raw material as those other thyroid medications: natural desiccated thyroid. There are two things that you often hear about these kinds of supplements:
- That there is no active hormone
- There might be active hormone, but you can change it by taking a certain amount of supplement
The problem here is that the first is simply not true, and the second is somewhat true but not always consistent (which is also not good).
The idea of “removing” the hormone is actually impossible, first and foremost, so that is a problem whenever you see that claim made.
Diving Into The Study
The second is that a study was done by a group of scientists which shows how these supplements consistently varied in their range of having T3 and T41.
The range, for both, was actually huge. Based on this, if you were to take these supplements in greater quantities you might risk overdosing without knowing it. That is because each supplement is like playing the lottery. You might get a little, or you might get a lot!
The other dangerous aspect of these supplements is that they are bovine-derived, and therefore are subject to what are known as prions.
Prions are like a more basic version of a virus, which has led to the outbreak of what you might know as mad cow disease.
The problem here is that you might be subjecting yourself to this problem, which also takes almost 15 years to manifest itself. That’s what happens when you take bovine-derived supplements2.