What is X-Linked Hypophosphatemia (XLH)?

X-Linked Hypophosphatemia (XLH) is a rare genetic disorder that affects about one in 20,000 people. The key characteristic of XLH is a low level of phosphate in the blood, called Hypophosphatemia. When a person is affected by XLH, their kidneys do not properly handle Vitamin D and phosphate. This causes a variety of symptoms and disorders that usually affect their bones and teeth.

Source: Learn About XLH (xlhnetwork.org)