A sweet way to extend lifespan-too good to be true: Polysaccharide-based therapy for lifespan and healthspan extension: Astragalus polysaccharide, isolated from astragalus membraneous, inhibits the expression of Ribosomal protein S6 kinase 1 (p70S6 Kinase) and extends mammalian lifespan, 26/July/2018, 12.38 am