This is a good example of some of the impact that Heart Shock and Trauma can have. My lineage of Chinese medicine has been speaking to this for many years. Please see the following audio under Add’l Links for a 90 minute lecture I give on this topic.
https://www.acupunctureandherbalmedicine.com/forms/Ross_HT_Shock_Kamwo_lecture_11.12.13.m4a
Exposure To Stress As A Child Can Permanently Affect Your DNA | IFLScience.