Fluorosis and its impact on thyroid hormones: a cross-sectional study in Bankura District, West Bengal, India


  • Prasanta Sinhamahapatra Department of Biochemistry, Bankura Sammilani Medical College and Hospital, Bankura, West Bengal, India
  • Sumanta Banerjee Department of Biochemistry, Bankura Sammilani Medical College and Hospital, Bankura, West Bengal, India
  • Subhayan Lahiri Department of Biochemistry, Bankura Sammilani Medical College and Hospital, Bankura, West Bengal, India




Fluorosis, Free T3, Free T4, Hypothyroidism, Thyroid stimulating hormone


Background: Fluorosis is an important public health problem in India. Fluoride ions can interact with iodide which can leads to abnormal thyroid function.

Methods: The present descriptive, community based study was conducted over a period of 1 year and 6 months in the endemic and non-endemic areas of Bankura district with the sample size of 200. High serum fluoride level (≥0.02 mg/L) was also noted in fluorosis endemic areas (39%) with respect to non-endemic areas (3%). Thyroid profiles were investigated among the participants.

Results: Hypothyroidism was found to be higher in proportion in endemic regions (34%) with respect to non-endemic regions (20%). The levels of serum TSH, fT4 and fluoride in endemic areas were correlated significantly with non-endemic areas. Fluoride level was found to be in significant positive correlation with TSH level and in negative significant correlation with fT4 and fT3.

Conclusions: High fluoride level could produce hypofunctioning of thyroid gland and so hypothyroidism was found to be higher in proportion in fluorosis endemic areas in respect to non-endemic areas.


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How to Cite

Sinhamahapatra, P., Banerjee, S., & Lahiri, S. (2019). Fluorosis and its impact on thyroid hormones: a cross-sectional study in Bankura District, West Bengal, India. International Journal of Research in Medical Sciences, 7(6), 2204–2209. https://doi.org/10.18203/2320-6012.ijrms20192499



Original Research Articles