A Study of Non-alcoholic Fatty Liver Disease in Patients With Hypothyroidism: A Cross-Sectional Study in a Tertiary Care Hospital.

Background Hypothyroidism occurs when the thyroid gland is underactive and fails to produce sufficient thyroid hormones. It can affect multiple organs including the heart, brain, liver, kidneys, and reproductive system, leading to symptoms such as fatigue, cognitive impairment, elevated cholesterol, fluid retention, fatty liver, and menstrual irregularities. Given the higher prevalence of fatty liver disease in patients with hypothyroidism, it is important to evaluate the need for routine screening for fatty liver in these patients. Materials and methods This observational, cross-sectional study was conducted at Dr. D. Y. Patil Medical Hospital, Pune, Maharashtra, India, from October 2022 to June 2024. The study included 60 patients aged over 12 years who were known or recently diagnosed with hypothyroidism. Patients with type 2 diabetes mellitus, pregnant women, or those with chronic liver disease were excluded. Data collected included physical examination findings and laboratory test results. Fatty liver was diagnosed using magnetic resonance elastography. Statistical analysis was performed using IBM SPSS statistics for Windows, version 20 (IBM Corp., Armonk, New York). The statistical significance of parametric data was evaluated using the Chi-square test. A p-value less than 0.05 and a confidence interval of 95% were considered statistically significant. Result The study population had an average age of about 45 years, with most participants aged between 40 and 49 years. The majority of the participants were female, making up over 83% of the group, while males constituted about 17%. The most commonly reported symptom was weight gain, followed by constipation and fatigue. For individuals with fatty liver, the average thyroid-stimulating hormone (TSH) level was notably higher compared to those without fatty liver. Additionally, low-density lipoprotein (LDL) levels were higher in individuals with non-alcoholic fatty liver disease (NAFLD) compared to those without. Both TSH and LDL levels showed a statistically significant association with the occurrence of NAFLD. Conclusion Hypothyroidism was more prevalent in females and in the age group 40-49 years. There was a statistical significance between TSH and the occurrence of NAFLD. In this study, statistical significance was also found between LDL and the occurrence of NAFLD.