 According to the Pew Research Center, just over one of every eight Americans aged 40 to 70 is both raising a child and caring for a parent, in addition to between seven and ten million adults caring for their aging parents from a long distance.US Census Bureau statistics indicate that the number of older Americans aged 65 or older will double by the year 2030, to over 70 million.In Australia, the term 'sandwich carer' relevant to the 2.6 million unpaid caregivers.