It's relative. Depends on how you define healing. For me it means that I am not suffering from severe brain fog and am able to string words together to form sentences and to analyze college level problems on a daily basis without being overly stressed. I am not saying it is end all be all, but it is a path to wellness I believe. Even the GAPS diet requires a minimum of two years of adherence to heal the gut. Maybe that person had not been adhering to the diet for very long. Where did the quote come from. I'd like to read more.