This is news for me. I have low bone density.
And from RealAge:
How about a beer? Ah, now you're paying attention! The bone-saving secret in brewskis is silicon, a chemical that stimulates collagen production. What's collagen? A protein that makes your bones denser and your joints more flexible. Brews with the most hops and malted barley are the richest in silicon. (Here's another surprising drink for better bones.) Not big on beer? Bananas and brown rice also are silicon-packed.
And dark chocolate, peanuts, walnuts and other sources of zinc.
And impact exercises like pushups and walking. I do those every day.