Modern society is altering the lifestyle and longevity of its members much more quickly than evolutionary adaptation to these changes can take place. The problem of calcium deficiency in the population is compounded by the growing percentage of aged individuals with relatively fragile, less massive skeletons. Current-day civilizations are much more effective in prolonging human life in a state of relative debility than even a few decades ago. This reality is unlikely to change and mandates that we develop strategies to prevent aging-related diseases like osteoporosis before they become...

Many of the earliest books, particularly those dating back to the 1900s and before, are now extremely scarce and increasingly expensive. We are republishing these classic works in affordable, high quality, modern editions, using the original text and artwork.

Modern society is altering the lifestyle and longevity of its members much more quickly than evolutionary adaptation to these changes can take place. The problem of calcium deficiency in the population is compounded by the growing percentage of aged individuals with relatively fragile, less massive skeletons. Current-day civilizations are much more effective in prolonging human life in a state of relative debility than even a few decades ago. This reality is unlikely to change and mandates that we develop strategies to prevent aging-related diseases like osteoporosis before they become...