I have always believed that certain plants will rebuild our physical inherited weaknesses. A few of them include: Hawthorne berry for the heart, Cayenne for the blood vessels, Eyebright herb for the eyes. Each body system has a specific plant that is its primary rebuilding food.
Gratefully, Dr. Christopher put these primary herbal foods into herbal combinations that work synergistically to cleanse or rebuild those specific body systems. For example the formula for rebuilding the heart is named Hawthorne Berry Heart Syrup and the Kidney cleanse formula is called simply Kidney Formula. For a full list of the formula old and new names see https://www.herballegacy.com/Dr._Christopher_Formulas.html.
Disclaimer: I am not affiliated with the Dr. Christopher Corporation. The conclusions I am sharing are from my own experience. This information is for education only and makes no claims of medical advice.