Gray Hair Can Return to Its Original Color—and Stress Is Involved, of Course

Around four years ago Martin Picard, a mitochondrial psychobiologist at Columbia University, was pondering the way our cells grow old in a multistep manner in which some of them begin to show signs of aging at much earlier time points than others. This patchwork process, he realized, was clearly visible on our head, where our hairs do not all turn gray at the same time. “It seemed like the hair, in a way, recapitulated what we know happens at the cellular level,” Picard says. “Maybe there’s something to learn there. Maybe the hairs that turn white first are the more vulnerable or least resilient.” [read more]

Source: Scientific American

Also covered by: The Atlanta Journal-Constitution and New York Post