Probably due to inadequante nutrition. Some Ca/Mg supplements and Strontium
(helps with bone formation) may help in his case. http://www.ynpstore.com/supplements/bone.html
Bone health is rapidly becoming an increasingly important issue. It is well
known that the risk of fracture increases with age and that the number of
people over 50 years of age is a rapidly growing segment of the population.
By the year 2020, half of all Americans will already have or will develop
problems with their bone s