The Study
Hypothalamic Thyroid Hormone Receptor α1 Signaling Controls Body Temperature
This study looked at mice with a special gene change and noticed their body temperature was lower. It doesn't prove that the gene change caused the temperature drop—it just shows they happened together. We can't say it would work the same way in people.
Analysis score
Maximum 72 for a cohort study.
Where the score came from
Scientists found that a specific brain receptor (TRα1) helps set your body's temperature. When it's broken in mice, their body temperature stays too low—even in warm rooms.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 56 / 100
Quality score
Groups of people are followed over time to see who develops an outcome. Strong for identifying risk factors and associations, but cannot prove causation as firmly as RCTs.
Key takeaways
Summary
Based on the study abstract and findings.
- 1Yes—this suggests the brain's thermostat, not just the thyroid, controls body temperature, and it can be reset by hormone treatment.
- 2Mice with broken TRα1 had lower body temperature; giving them T3 hormone fixed it.
- 3Putting broken TRα1 only in the hypothalamus made other mice also have low temperature.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Thyroid
Year
2023
Authors
S. Sentis, Riccardo Dore, Rebecca Oelkrug, Beke Kolms, K. Iwen, Jens Mittag
Related Content
Claims (4)
The thyroid gland releases hormones that directly control heart rate, body temperature, sex hormone levels, mood, digestion, and metabolic rate.
In mice, blocking thyroid hormone receptor TRα1 specifically in the hypothalamus using a viral vector causes a persistent drop in body temperature, matching the effect seen in genetically modified mice with impaired TRα1 function.
In mice, a mutation in the thyroid hormone receptor TRα1 in the hypothalamus results in a persistent drop in body temperature even when the environment is warm enough to maintain normal temperature.
Giving T3 hormone orally restored normal body temperature in mice carrying a specific genetic mutation that disrupts temperature regulation.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.