Meet the centenarian professor who is a living example of health, fitness and everything good. Popularly known as the nutrition professor, Dr. John Scharffenberg was born on December 15, 1923 in China. A Harvard University alumnus, Dr. Scharffenberg’s interview on longevity and leading a healthy life is very popular on social media. Meet the centenarian professor who is a living example of health, fitness and everything good. Popularly known as the nutrition professor, Dr. John Scharffenberg was born on December 15, 1923 in China. A Harvard University alumnus, Dr. Scharffenberg’s interview on longevity and leading a healthy life is very popular on social media. Health and Fitness, Health Tips, Exercises & Workout Tips, Diet & Wellness | Times of India Lifestyle