https://aeon.co/essays/how-bad-experiences-in-childhood-lead-to-adult-illness

Another article reporting on how childhood adversity "stays" in the body and manifests later as illnesses.

".....Often, these illnesses can be chronic and lifelong. Autoimmune disease. Heart disease. Chronic bowel disorders. Migraines. Persistent depression. Even today, doctors puzzle over these very conditions: why are they so prevalent; why are some patients more prone to them than others; and why are they so difficult to treat?.....

To date, more than 1,500 studies founded on Felitti and Anda’s hallmark ACE research show that both physical and emotional suffering are rooted in the complex workings of the immune system, the body’s master operating control centre – and what happens to the brain during childhood sets the programming for how our immune systems will respond for the rest of our lives.......
If anything, that’s the most important take-away from ACE research: the brain and body are never static; they are always in the process of becoming and changing.
We can turn bad epigenetics into good epigenetics and rescue ourselves. We have the capacity, within ourselves, to create better health. We might call this brave undertaking ‘the neurobiology of awakening’."......

WHAT TO DO ABOUT THIS?

....."Many mind-body therapies not only help you to calm your thoughts and increase your emotional and physical wellbeing, but research suggests that they have the potential to reverse too.
Meditation, mindfulness, neurofeedback, cognitive therapy, EMDR (eye movement desensitisation and reprocessing) therapy"..., TRE, QEC are some suggested therapies.
Give these types of therapies a go.