Prevalence and risk factors of hypertension and diabetes in the Katkari tribe of coastal Maharashtra

BACKGROUND AND OBJECTIVES: Urban and rural India are both going through health epidemiological transition and will soon face huge burden of noncommunicable diseases (NCDs). Information on the status of NCDs in tribals is limited. Although the prevalence of hypertension in scheduled tribes (STs) has been studied in several states by the National Nutrition Monitoring Bureau, tribe-specific data are very scanty. The objective of this study was to generate data on the status of hypertension and diabetes, the two objectively measurable NCDs in Katkaris, the dominant ST in the Raigad district of coastal Maharashtra. METHODS: The study was conducted in 410 adult Katkaris (women 219) of both sexes of ≥18 years of age in three adjoining tehsils of the district. Using the Institution Review Board approved protocol; information was obtained on sociodemographic parameters, educational level, dietary pattern, and substance abuse. Prevalence of overweight, hypertension, and diabetes was measured using standard field-based procedures and techniques. RESULTS: Katkaris, who are mostly landless manual laborers, subsist on a protein-poor, imbalanced diet. About half of women and one-third of men have body mass index (BMI) <18.5 kg/m(2), an indication of undernutrition. On the other hand, about 2% of participants were obese (BMI ≥30 kg/m(2)). The overall prevalence of hypertension and diabetes was 16.8% and 7.3%, respectively. Hypercholesterolemia was recorded in about 3% of the participants. INTERPRETATION AND CONCLUSIONS: Prevalence of diabetes and hypertension in Katkaris is still lower than that of urban and rural populations, closer to the latter. This may be due to the absence of known risk factors such as obesity, sedentary lifestyle, and hyperlipidemia in this community. Fast acculturation of the STs suggests that NCDs will soon become a major health issue in them too. It is time to launch a multicentric national study to gather baseline information on the status of NCDs in STs.