The specific gravity of the body, which can be measured by underwater weighing.
The solidity of bone tissue relative to its overall volume is referred to as bone density. A decline in bone density is a natural aspect of the aging process. However, an excessive reduction in bone density can predispose individuals to fractures. Conversely, certain disorders such as osteopetrosis and Paget’s disease can result in an elevation of bone density. Densitometry, a technique employing low-dose X-rays, is employed to measure bone density accurately.