An unsurprising new survey found that nearly half of women are stressed about aging. What is surprising, is that the women who are most stressed about getting older are still young. According to the survey, Millennials (57%) and Gen Zers (56%) are more stressed about getting older than Gen X (46%) and Boomers (31%). The research found that 40% of Gen Z women and 38% of Millennial women actually say they feel older than their age. And 18% of the Gen Z women surveyed believe that they appear older, more than any other generation.