I have come across some valuable information since I wrote my book. Here are a few wonderful paragraphs relating to healing generations by Truman Madsen. Thank you Tresa for sharing this.
And, therefore, as you look back at your seventy or so forebears... you might recognize that you have inherited the blood of many generations. And blood may not be a correct word scientifically, but in the scriptures it stands for seed, which means heredity, the inheritance of tendencies, and all of us have them. You have the blood of this generation, from which we must become clean - 'clean from the blood of this generation' (D&C 88:85). If you do, you will be clean from the blood of every generation, because it is compounded and accumulated into now- and that includes the blood of some degeneration.
So perhaps you do have problems that you can blame on your ancestors, and if you
