As people age, significant weight loss can be an early warning sign of osteoporosis. Osteoporosis is a condition where bones become fragile and more prone to fractures. Weight loss might indicate a decrease in bone density because essential minerals are being lost from the bones. This is particularly concerning for older adults, as they lose bone mass more rapidly. If not detected and treated early, it can lead to fractures and other serious issues. Therefore, if an older person experiences unexplained weight loss, they should see a doctor to check their bone density and address potential osteoporosis early.