Is Beard Growth Speed Really Linked to Lifespan? Unraveling the Science Behind Facial HairThe morning sun streamed through the window as Li Ming stared at his newly sprouted beard in the mirror, lost in thought. The beard he'd shaved clean just yesterday had stubbornly "resurrected"! A friend's joking remark, "Fast beard growth means a short life," lingered in his mind, sparking his curiosity...