Subtle traces on your DNA can reveal what’s happened to you during your lifetime. Although the majority of studies have focused on negative life experiences such as child abuse, positive experiences alter also our epigenome – the patterns of labels and sequencing on the DNA. Rachel Yehuda, a clinical neuroscientist at Mount Sinai Hospital, New York, confirms that both negative and positive experiences have an impact on our biology and can alter our DNA. The good news is that some changes of the epigenome are reversible and that even things as simple as diet, meditation or counselling and coaching can alter the epigenome too.