The following books are recommended by Dr. Lee.
- Hypothyroidism, by Broda Barnes M.D.
- What Your Doctor May Not Tell You About Breast Cancer: How Hormone Balance Can Help Save Your Life, by John Lee M.D. (chapter 8 is a good overview of Estriol)
- Superhormone Promise, by William Regelston M.D. (This is about DHEA)
- Natural Hormonal Balance for Women, by Uzzi Reiss M.D.
- Testosterone Syndrome, by Eugene Shippen M.D.
- Grow Young with HGH, by Dr. Ronald Klatz
- Keeping aBreast, by Khalid Mahmud, M.D., F.A.C.P. (This is the latest book on Natural Hormones, written by an Oncologist)