The Claim

Bile salts increase the deiodination of thyroxine (T4) to triiodothyronine (T3) in peripheral tissues, resulting in elevated serum concentrations of T3.

Source: Hyperthyroidism Symptoms & Conditions / Graves / Best Tips – Dr.Berg

What the research says

Not yet evaluated

We are still looking at what the research says.

Supports
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Challenges
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These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

How it works
1 study reviewed
In plain English

Bile salts enhance the conversion of the thyroid hormone T4 into the more active form, T3, in tissues outside the thyroid gland, leading to higher levels of T3 in the blood.

See the scientific wording

Bile salts increase the deiodination of T4 to T3 in peripheral tissues, elevating serum concentrations of the more potent thyroid hormone.

What the research says

1 study
  1. Study: Effects of propylthiouracil on the biliary clearance of thyroxine (T4) in rats: decreased excretion of 3,5,3'-triiodothyronine glucuronide and increased excretion of 3,3',5'-triiodothyronine glucuronide and T4 sulfate.

    The study didn’t test bile salts — it tested a drug that blocks the conversion of T4 to T3. That drug made less T3, which is the opposite of what the claim says bile salts do. So the study actually contradicts the claim.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.