By the year 2025, approximately one in three adults over age 20 years (1.56 billion people worldwide) will have hypertension, the most important preventable risk factor for myocardial infarction, according to an article in the January 15th issue of the Lancet.

An American epidemiology team analyzed hypertension studies conducted around the world to assess the global burden of the disease. The researchers expect a 60-percent increase in adults with hypertension over the next 20 years. Their results showed that in 2000 approximately one in four adults had hypertension. Of the estimated 972 million affected adults in 2000, 639 million were in economically developing countries.

“Hypertension disproportionately affects people in less economically developed countries,” said Dr. Jiang He, a coauthor. “Not only are there greater numbers of people with high blood pressure in these countries but their governments and citizens lack the resources to prevent, detect and adequately treat hypertension, which ultimately contributes to high rates of early death from heart attack, stroke, and kidney disease. By 2025 nearly three out of every four persons with high blood pressure will be living in an economically developing country.”

“High blood pressure is a modifiable risk factor for life-threatening, chronic diseases,” he added. “The international community should find ways to advocate for low-cost lifestyle changes that can reduce the risk of high blood pressure.”

He recommended interventions focusing on losing weight, reducing salt intake, moderating alcohol consumption, increasing potassium intake and changing diet and exercise habits. These changes would also have a positive effect on risks of obesity and type 2 diabetes, He said.

The team analyzed data from 30 studies done around the world, representing over 500,000 adults over age 20 years.