Since 2014, the MIT AgeLab has hosted a bimonthly research panel of adults aged 85 and older — the fastest-growing age demographic in the United States — on the MIT campus. AgeLab researchers have queried the “Lifestyle Leaders” panel on life’s smallest details and the most universal issues — sex, death, politics, loneliness. Drawn from the Boston metropolitan area, the 85-plus-year-olds who comprise the Lifestyle Leaders panel are more educated, wealthier, and healthier than most Americans of their age group. AgeLab founder and Director Joseph Coughlin views the group as…