Dr Fuhrman MD. is most definitely at the cutting edge of Nutritional research in the reversal of disease and attaining wellness from whatever age you happen to be and well into the senior years.
His emphasis though seems to be exclusively with diet/nutrition, (which is probably the most important) rather than the other factors of good health such as weight-bearing exercise, which has been demonstrated to avoid osteoporosis/hip-fractures to name but two.