By eating and exercising in a manner suitable to your blood type, D'Adamo maintains that people can live healthier lives. D'Adamo's diet for type O's focuses on lean, organic meats, fruits and vegetables while eschewing dairy, wheat, alcohol and caffeine.
Karl A. Roessner is Chief Executive Officer of the Company and has served as a director since September 2016. Prior to his appointment as Chief Executive Officer, Mr. Roessner served as the Company's General Counsel for more than seven years, overseeing all compliance and regulatory functions for the Company and its bank and brokerage subsidiaries.
Collaborating with Jean Brossel, he researched quantum mechanics, the interaction between light and atoms, and spectroscopy. Kastler, working on combination of optical resonance and magnetic resonance, developed the technique of  optical pumping . Those works led to the completion of the theory of lasers and masers.