The problem comes when you habitually ingest acids in the diet, then draw on calcium stores over and over and over again to neutralize these acids. Though bones have a lot of stored calcium, the supply is not inexhaustible. Bones will eventually become demineralized—i.e., depleted of calcium. That’s when osteopenia (mild demineralization) and osteoporosis (severe demineralization), frailty, and fractures develop.
