Osteoporosis

{
  "id": "MLC-T-ENV-019875",
  "term": "Osteoporosis",
  "field": "Environment",
  "definition": "1. Severe loss of bone mass, density, and strength. Although usually an age-related disorder, osteoporosis may also occur as a result of HIV infection or as a side effect of anti-HIV drugs.\n\n2. A condition of reduced bone mass, with decreased cortical thickness and a decrease in the number and size of the trabeculae of cancellous bone (but normal chemical composition), resulting in increased fracture incidence. Osteoporosis is classified as primary (Type 1, postmenopausal osteoporosis; Type 2, age-associated osteoporosis; and idiopathic, which can affect juveniles, premenopausal women, and middle-aged men) and secondary osteoporosis (which results from an identifiable cause of bone mass loss).\n\n3. A condition that is marked by a decrease in bone mass and density, causing bones to become fragile.",
  "references": [
    "NIH AIDS Info Glossary",
    "National Cancer Institute Thesaurus",
    "National Cancer Institute Glossary"
  ],
  "url": "https://mlchart.com/terminology/environment/osteoporosis/"
}