The Study
Effects of a diet plus exercise program on thyroid function in patients with obesity
This study watched 34 people lose weight with diet and exercise and checked their thyroid hormones before and after. It found that their thyroid numbers didn’t change much, but it didn’t compare them to people who didn’t do the program — so we can’t say the program caused the stable thyroid levels.
Analysis score
Maximum 72 for a cohort study.
Where the score came from
Scientists gave 34 very overweight people a healthy diet and daily exercise for 3 months to see if losing weight would change their thyroid hormones, which help control metabolism.
Where does this study sit?
Systematic Reviews & Meta-analyses
Max 100Randomized Trials
Max 90Cohort Studies
Max 72Case-Control
Max 58Cross-Sectional
Max 44Case Reports & Series
Max 30Expert Opinion
Max 532 / 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 — even though they lost a lot of weight, their thyroid kept working normally, which is good news because thyroid problems can slow metabolism.
- 2People lost 11 kg on average, and their thyroid hormone levels (TSH, FT3, FT4) stayed exactly the same — no significant change.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Metabolism Open
Year
2019
Authors
Youssef Kouidrat, M. Diouf, R. Desailloud, Rufin Louhou
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.