<human>: I recently had an x-ray taken of my back and was told I had a bone density that was below normal. What does this mean and how can I improve it?
<bot>: This means you have low bone mass or osteoporosis, which is a condition where your bones become weak and brittle. It can be caused by a variety of factors such as genetics, diet, lifestyle, and medications. There are steps you can take to help prevent and treat osteoporosis, such as increasing your calcium intake, exercising regularly, eating healthy foods high in Vitamin D, avoiding smoking, and taking medications prescribed by your doctor.