A landmark federal study was halted when early results showed that lowering patients' top blood pressure number to 120 or lower led to dramatic reductions in heart disease and deaths. iStockphoto hide caption

itoggle caption iStockphoto

Steaks on the grill at the Mercado del Puerto in Montevideo. So far there are no figures that show if the table salt ban, which was enacted a few years ago, is actually making a difference in Uruguayans' health. Travel Aficionado/Flickr hide caption

itoggle caption Travel Aficionado/Flickr

Esther Okaya has a health problem that is a growing concern in Sub-Saharan Africa: high blood pressure. Gregory Warner/NPR hide caption

itoggle caption Gregory Warner/NPR

Nutrition fact labels are good but confusing, consumers say. iStockphoto.com hide caption

itoggle caption iStockphoto.com

The use of multiple blood pressure medications may be helping some Americans bring their hypertension under control. iStockphoto.com hide caption

itoggle caption iStockphoto.com

The standard technique for measuring blood pressure may not be good enough. /iStockphoto.com hide caption

itoggle caption /iStockphoto.com