What does osteopenia indicate?

Osteopenia indicates an abnormal reduction of bone mass, which is a condition where bone mineral density is lower than normal but not low enough to be classified as osteoporosis. This decrease in bone density can be a precursor to osteoporosis and implies that the bones are weaker, making them more susceptible to fractures and other complications. Monitoring and managing osteopenia is crucial for preventing further bone loss and potential fractures in the future.

The other options here do not accurately reflect what osteopenia represents. An increase in bone mass contradicts the definition of osteopenia, while normal bone density would not warrant the diagnosis of osteopenia at all. Inflammation of bone tissue, although an important medical issue, does not relate to the reduction of bone mass outlined by the term osteopenia.