Prevalence of hypertension among fisherman community in Chennai, Tamil Nadu, South India: a descriptive cross-sectional study

Abstract

Background: Hypertension, often referred to as the "silent killer," usually presents no symptoms, making many people unaware of their condition. Fishing, as a profession, poses unique health risks due to harsh environmental conditions, irregular work patterns, and strenuous physical demands. Fishermen are particularly vulnerable due to unhealthy diets, sleep disturbances, physical inactivity, tobacco and alcohol use, and obesity. Estimating the prevalence of hypertension among fishermen is crucial for understanding the extent of this hidden health issue within this high-risk group and for implementing targeted interventions to improve their health outcomes.

Methods: A cross-sectional study was conducted among Chennai's fishermen using systematic random sampling. Data were collected using a semi-structured questionnaire, and blood pressure was recorded following JNC criteria.

Results: The study included 180 fishermen with a mean (SD) age of 49 (12). The prevalence of hypertension was 38.9%. Significant associations were found between hypertension, age, and years of fishing experience. Notably, 77.2% of fishermen lacked knowledge about hypertension, and 86.1% were unaware of its risk factors. Isolated systolic hypertension was found in 16% of participants, while 36% had isolated diastolic hypertension.

Conclusions: In Chennai, hypertension is highly prevalent among fishermen and is significantly associated with age, years of fishing experience and smoking. There was no significant association with family history of hypertension, stress, or fried fish consumption. Awareness and knowledge about hypertension were very low among the fishermen. Although isolated systolic and diastolic hypertension were relatively minimal, regular hypertension screening for this community is essential.