Well done and kudos  Perhaps more information could be added in the appropriate section copied directly from another article Biochemist T Colin Campbell suggested in The China Study  that osteoporosis is linked to the consumption of animal protein because unlike plant protein animal protein increases the acidity of blood and tissues which is then neutralized by calcium pulled from the bones Campbell wrote that his ChinaCornellOxford study of nutrition in the s and s found that in rural China where the animal to plant ratio for protein was about  percent the fracture rate is only onefifth that of the USCampbell T Colin The China Study Benbella Books  pp