Author(s): Gupta R
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Abstract Cardiovascular diseases caused 2.3 million deaths in India in the year 1990; this is projected to double by the year 2020. Hypertension is directly responsible for 57\% of all stroke deaths and 24\% of all coronary heart disease deaths in India. Indian urban population studies in the mid-1950s used older WHO guidelines for diagnosis (BP > or =160 and/or 95 mmHg) and reported hypertension prevalence of 1.2-4.0\%. Subsequent studies report steadily increasing prevalence from 5\% in 1960s to 12-15\% in 1990s. Hypertension prevalence is lower in the rural Indian population, although there has been a steady increase over time here as well. Recent studies using revised criteria (BP > or =140 and/or 90 mmHg) have shown a high prevalence of hypertension among urban adults: men 30\%, women 33\% in Jaipur (1995), men 44\%, women 45\% in Mumbai (1999), men 31\%, women 36\% in Thiruvananthapuram (2000), 14\% in Chennai (2001), and men 36\%, women 37\% in Jaipur (2002). Among the rural populations, hypertension prevalence is men 24\%, women 17\% in Rajasthan (1994). Hypertension diagnosed by multiple examinations has been reported in 27\% male and 28\% female executives in Mumbai (2000) and 4.5\% rural subjects in Haryana (1999). There is a strong correlation between changing lifestyle factors and increase in hypertension in India. The nature of genetic contribution and gene-environment interaction in accelerating the hypertension epidemic in India needs more studies. Pooling of epidemiological studies shows that hypertension is present in 25\% urban and 10\% rural subjects in India. At an underestimate, there are 31.5 million hypertensives in rural and 34 million in urban populations. A total of 70\% of these would be Stage I hypertension (systolic BP 140-159 and/or diastolic BP 90-99 mmHg). Recent reports show that borderline hypertension (systolic BP 130-139 and/or diastolic BP 85-89 mmHg) and Stage I hypertension carry a significant cardiovascular risk and there is a need to reduce this blood pressure. Population-based cost-effective hypertension control strategies should be developed.
This article was published in J Hum Hypertens
and referenced in Journal of Antivirals & Antiretrovirals