One in three adults suffers from high blood pressure, a key cause of strokes and heart disease, according to World Health Organization figures released on Wednesday. Canada and the United States have the fewest patients, at less than 20 percent of adults, but in poorer countries like Niger the estimated figure is closer to 50 percent, the UN body said. While wealthier countries have seen their cases drop thanks to effective, low-cost treatment, in Africa many remain people undiagnosed and are not getting help, according to the WHO. Source: The Coming Crisis
