Masayoshi Yamaguchi, Ph.D., IOM, FAOE, DDG, DG, is President, Regucalcin Biomedical Institute, Shizuoka, Japan (2016 -); Adjunct Professor, Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta, GA, USA (2013 - 2016); Visiting Professor, Department of Medicine, Baylor Medical College, Houston, USA (2012-2013); Visiting Professor, Department of Medicine, Emory University School of Medicine (2007-2011); Professor, Graudaute School of Nutritional Sciences, University of Shizuoka, Shizuoka, Japan (1992-2007). Dr. Yamaguchi is engaged in the fields of endocrinology and cell signaling since 1971, and these researches are developed in the aspects of biochemistry, molecular biology, endocrinology, metabolism, nutrition, pharmacology and toxicology. Currently, Dr. Yamaguchi has an interesting for cell signaling mechanism, osteoporosis treatment, and cancer biomedical sciences. Dr. Yamaguchi discovered two novel proteins (genes), which were named a regucalcin, a cell signaling suppressor (1978), and RGPR-p117, a regucalcin gene promoter-related transcription factor (2001). Since 1974, Dr. Yamaguchi published over 550 English articles in professional journals with peer-review, and registered 23 national and international patents. Dr. Yamaguchi serviced as Editorial Board Members in 90 Journals thus far. Dr. Yamaguchi was listed in various biographies; Who’s Who in the World (2005-, Marquis Who’s Who, USA), Who’s Who in Sciences and Engineering (2004-, Marquis Who’s Who, USA), and International Biographical Dictionary (2006-, IBC, England).