Abstract: The objectives of the present investigation were to find out the association of thyroid abnormalities with food habits, sex , religion and also habitats of region under study. Two study groups were surveyed for the study on the prevalence of thyroid diseases. One study group is from Dakshina Kannada and the other from the Kasargod District. A total of 398 subjects were surveyed. Questionnaires were prepared and responses were collected from the subjects. The analysis revealed that in D.K district normal subjects comprise of 39.1% followed by Hypothyroidism with 36.2% and Hyperthyroidism of 24.7%.In Kasaragod district, hypothyroidism is observed in 54.6% subjects followed by normal with 27.6% and Hyperthyroidism only 17.8%.