The study found this loss of bone strength increases the risk of broken bones later in life.

VOA: special.2009.03.10

But while broken bones can be painful, they are generally not life-threatening.

VOA: special.2009.02.04

Jennifer Bemisderfer says this involves thinking about a product's whole lifetime: "When those products are at the end of their useful life, how are they going to be broken down?

VOA: special.2010.01.26