Even more surprising, Michael Meaney at McGill University has studied whether it’s possible to reverse this DNA methylation.[4] He had a population of mice whose mothers didn’t lick them very much growing up. These mice essentially had distracted, neglectful mothers and grew up anxious. So Meaney injected a solution into the brains of these anxious mice that could pull off the epigenetic markers. And…it worked. Afterward, the mice weren’t anxious anymore. Their stress response was completely normal.