In 1983, archaeologists were excavating a cave in South Africa when they came across a strange-looking femur bone. It dated […] The post The World’s Oldest Arrow Poison Was Discovered In A ...

Dual-energy X-ray absorptiometry (DXA, or formerly DEXA) is a technique used to measure bone mineral density (BMD). The preferred regions for BMD measurement are lumbar spine, proximal femur and whole ...