Health News Ancient Aztec 'superfood' could lower blood pressure, study says Tauren DysonUPIDec. 31, 2018 / 11:14 AM A food source consumed by the Aztecs during the 16th century could bring new hope for people with high blood pressure, a study says. Photo courtesy of Perdita/Wikipedia Dec. 31 (UPI) -- A food source consumed by the Aztecs until the 16th century could bring new h..