Trauma can live in your limbic system for decades, even your whole life. If something bad or traumatizing has happened, you can intellectually work through it. You can even spiritually accept the trauma, but severe trauma stays in your limbic system and can cause problems decades later. Storage center for memories.
Sometimes the trauma can affect the limbic system – which contains your flight, freeze, fight response. This is your alarm center and it can be activated without your awareness. The limbic system affects your blood pressure, heart rate, sugar levels, all the things that get activated when your body is in shock, and, if too active, causes inflammation which leads to disease. Many years later this can lead to high blood pressure, diabetes, heart disease, stroke and even dementia.