Dr. Litwack is an accomplished and prolific author and editor at Elsevier. Spanning over 25 years, he has been the editor of over 55 volumes of Vitamins and Hormones, co-author of Hormones, editor of 14 volumes of Biochemical Actions of Hormones, co-editor of Actions of Hormones on Molecular Processes, author of Human Biochemistry and Disease, and Human Biochemistry. He is the author of almost 300 journal articles and has been on the editorial boards of numerous journals, including Endocrinology, Cancer Research, Oncology Reports, Journal of Molecular Biochemistry, Apoptosis, and Critical Reviews in Eukaryotic Gene Expression.
Dr. Litwack is Emeritus Professor and Chair of Basic Sciences, Geisinger Commonwealth School of Medicine, and is formerly Professor of Molecular and Cellular Medicine and Associate Director at the Institute for Regenerative Medicine, Texas A & M Health Science Center.

1. Introduction 2. Steroid Hormones: Chemistry, Biosynthesis, and Metabolism 3. The Hypothalamus and Anterior Pituitary 4. Posterior Pituitary Hormones 5. Thyroid Hormones 6. Pancreatic Hormones: Insulin and Glucagon 7. Gastrointestinal Hormones 8. Eicosanoids 9. Calcium-Regulating Hormones: Vitamin D, Parathyroid Hormone, Calcitonin & Fibroblast Growth Factor-23 10. Adrenal Corticoids 11. Hormones of the Adrenal Medulla 12. Androgens 13. Estrogens and Progestins 14. Hormones of Pregnancy, Parturition and Lactation 15. Hormones Related to the Kidney and Cardiovascular System 16. The Pineal Gland 17. Growth Factors