Is it possible to hold back premature mental and physical decline? Is it possible to get to 60, 70 and beyond and feel and function like a healthy 40 or 50 year old? Absolutely. I’m doing it and others can do it too. Gerontologist Dr. John W. Rowe says how well you age is 70 percent lifestyle choices and 30 percent heredity, behavior, and environment. That 70 percent gives you a lot of power to control the aging process. How to fight “old age” and win Putting Old on Hold begins with loving.