The formula for measuring bone density is (body weight kg – age) x 0.2, but it is often measured clinically with the help of instruments, such as dual-energy X-ray absorptiometry. The bone density formula is only a rough estimation, and it is believed that if the measured result is > -1, the risk of osteoporosis is small; if the result is less than -4, the risk of osteoporosis is high; if the result is between -4 and -1, the risk is moderate. However, this is generally not the case for clinical calculations. Clinics more often utilize instrumental measurements, which provide more accurate results. For example, dual-energy X-rays are used. The results are based on the T-value: a T-value of ≥ -1.0 is considered normal; a T-value between -2.5 and -1.0 is considered to be a decrease in bone mass; a T-value of ≤ -2.5 is considered to be osteoporosis. If you want to measure the bone density, it is recommended to go to a regular hospital, follow the doctor’s instructions to improve the relevant bone density examination, and follow the doctor’s instructions to standardize the treatment after a clear diagnosis, so as not to delay the condition.