Prevalence and pattern of thyroid dysfunction among adults with metabolic syndrome: A cross-sectional observational study.
DOI:
https://doi.org/10.51168/sjhrafrica.v6i12.2235Keywords:
Metabolic syndrome, Thyroid dysfunction, Subclinical hypothyroidism, Cardiometabolic risk, Endocrine profileAbstract
Background
Metabolic syndrome is linked with endocrine disturbances, including thyroid dysfunction, which may influence metabolic control and cardiovascular risk. This study assessed the prevalence and pattern of thyroid dysfunction among patients with metabolic syndrome.
Methods
A cross-sectional observational study was conducted in 100 adults who met the diagnostic criteria for metabolic syndrome. Thyroid function was evaluated using serum TSH, FT3, and FT4 levels. Thyroid status was classified as euthyroid, subclinical hypothyroidism, overt hypothyroidism, subclinical hyperthyroidism, or overt hyperthyroidism. Clinical details, metabolic parameters, and the number of metabolic syndrome components present were recorded. Data were analyzed, and results were presented using descriptive statistics.
Results
Thyroid dysfunction was observed in 36% of the study population. The most common abnormality was subclinical hypothyroidism (22%), followed by overt hypothyroidism (8%). Hyperthyroid patterns were less frequent (subclinical hyperthyroidism 4%, overt hyperthyroidism 2%). Females showed a significantly higher prevalence of dysfunction (57.1%) compared to males (20.7%). The age group of 40–59 years demonstrated the highest proportion of thyroid abnormalities (40.4%). A rising trend of thyroid dysfunction was noted with increasing metabolic load: 25.5% in those with three metabolic components, 45.7% with four components, and 60.0% with five components. These findings indicate a close association between metabolic burden and thyroid imbalance, as reflected by a significant positive correlation between BMI and TSH levels (r = 0.42, p < 0.001) and a significant inverse correlation between waist–hip ratio and serum T3 levels (r = −0.36, p = 0.002)
Conclusion
Thyroid dysfunction, particularly subclinical hypothyroidism, is common among patients with metabolic syndrome and is associated with female sex, middle age, and greater clustering of metabolic components.
Recommendations
Routine screening of thyroid function should be considered in patients with metabolic syndrome. Clinicians should maintain a proactive approach in counseling, early follow-up, and lifestyle modification to minimize disease progression.
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