European Primary Care Cardiovascular Society

Western lifestyle rather than natural course seems to underlie age-associated BP rise

Association of Age With Blood Pressure Across the Lifespan in Isolated Yanomami and Yekwana Villages

Literature - Mueller NT, Noya-Alarcon O, Contreras M et al. - JAMA Cardiol. 2018;doi:10.1001/jamacardio.2018.3676

Introduction and methods

While a common notion in cardiology is that blood pressure (BP) rises with age, little evidence of an age-associated rise in BP has been found in non-Westernized hunter-gatherer adults. Studies on the association between BP and age over the entire lifespan in children of isolated communities are still lacking and there are no studies focusing on age-BP association in geographically colocated communities with different levels of Westernization. Therefore, this cross-sectional study examined the age-BP association across the lifespan in two isolated Amerindian communities, the Yanomami and the Yekwana, who live in a remote area of the Venezuelan rainforest inaccessible by land.

The Yanomami community consists of hunter-gatherer-gardeners who are among the least acculturated peoples in the world, with lowest known BP measurements. The Yekwana people live close to the Yanomami community, but have been affected by missions and an airstrip for small-engine planes, allowing delivery of medicine and aspects of Western lifestyle, including intermittent exposure to processed foods and salt.

In this study sitting BP measurements were obtained from 72 Yanomami participants and 83 Yekwana participants (aged 1-60 years) between October 2015 and February 2016.

Main results

Conclusion

This small cross-sectional study showed an age-associated rise in BP in the more Westernized Yekwana community, which began in childhood, compared to an isolated non-acculturated community, suggesting that the age-associated rise in BP is not natural, but related to exposure to Westernized influences. The rise in BP in the more Westernized Yekwana community already started in childhood, indicating the potential for lifestyle interventions in children to prevent hypertension.

Find this article online at JAMA Cardiol

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