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Second only to teeth, bones are your body’s strongest material. And even though they’re solid, bones are dynamic, living tissue, made mostly from collagen and calcium phosphate, a mineral that hardens bone exterior.

But as you age, existing bone density breaks down faster than new bone is made, increasing risk of osteoporosis, a condition that reduces bone density and raises chance of fractures. Stay strong with naturally minded advice from a physical therapist (Marilyn Moffat, PT, New York University, New York), a nutritionist (Ann Gibson, CHHC, founder, AdventureWellness.com, Boulder, Colorado), and a naturopathic doctor (Justin Pollack, ND, co-owner, Mountain-River Naturopathic Clinic, Frisco, Colorado).