Blood pressure in Amazonian Indians does not grow with age
Diet affect how blood pressure in humans varies with age. To such conclusion scientists, who studied the Amazonian Indians who have no contact with modern civilization. These Indians the pressure remains constant throughout life. The study is published in the journal JAMA Cardiology.
High blood pressure is associated with many problems of the circulatory system, it can affect the occurrence of heart attack, stroke and kidney failure. In most countries the value of this parameter starts to increase already at an early age. For example, in the US, the pressure increases by 1.5 and 1.9 millimeters of mercury per year for boys and girls respectively, and 0.6 among adults.
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In the new work, scientists have studied the tribal Yanomamo and CWANA, who live on the border of Venezuela and Brazil. Yanomamo — hunters and gatherers, they are almost completely isolated from the outside world. CWANA not so often, but fairly regularly come into contact with civilization, so their diet is a small fraction of the processed products. The results of the study 72 Yanomamo aged 1 to 60 years showed that all subjects blood pressure average the same — about 63 to 95 mm Hg.St., while in the US the average pressure in adults is 121 to 71.
“The idea that blood pressure increases with age, is widely distributed in cardiology, but our studies provide evidence that this is a consequence of Western diets and lifestyle, not aging per se,” says lead author of the new work Noel Muller from the Johns Hopkins University (USA).