By Kerry Grens NEW YORK (Reuters Health) - Older adults who took vitamin B12 and folic acid supplements for two years had greater improvements on short- and long-term memory tests than adults who did not take the vitamins, according to the results of a new study from Australia. The benefits were modest, but encouraging, indicating that the vitamins "may have an important role in promoting healthy ageing and mental wellbeing, as well as sustaining good cognitive functioning for longer on a community-wide scale," Janine Walker, the lead author of the study and a researcher at Australian National University, told Reuters Health by email. The researchers asked more than 700 people, aged 60 to 74 years, to take a daily dose of folic acid and vitamin B12 or fake pills that resembled the vitamins...  MORE