Did you know your grandpa’s environment could affect when you (or your daughter) got your first period? New research found that chemicals grandfathers were exposed to—like preservatives in personal care products—can actually influence when their granddaughters start puberty. And get this: Dad’s side had an even bigger impact than Mom’s! Earlier periods are linked to higher risks of health issues later, so this could be a game-changer for understanding family health. Wild, right? #Health #BodyHealth #Puberty