HEALTH NEWS   ·         Mediterranean diet tied to one-fifth lower risk of death in women ·         Amaranth extract goes head to head with beet as nitrate source ·         Higher testosterone levels linked with lower diabetes risk among men under 65 ·         Heart healthy behaviors may help reverse rapid cell aging ·         Probiotic supplements beneficial in rheumatoid arthritis ·         Cancer patients often do better with less intensive treatment, new research finds