March 30, 2009 7:08 pm Lack of Enzyme Could be Obesity Cure Researchers say they’ve been able protect lab mice from obesity by knocking out an enzyme responsible for the metabolism of fat in the intestine. This could lead to new medications for obesity. US & World Videos 1:40 Charlie Puth reacts to Taylor Swift's ‘The Tortured Poets Department' name-drop 2:52 Severe weather kills at least 5 as tornadoes rip through Midwest and South 0:48 World Central Kitchen to resume operations in Gaza 8:39 Gina Rodriguez gushes 0ver motherhood with son Charlie 2:22 Scarlett Johansson and Colin Jost have date night at White House Correspondents' dinner