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Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.
More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.
Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.
HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.
Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.
![School-age children are often independent and industrious, with a developing sense of self-confidenc](https://biology-forums.com/gallery/47/medium_2137_17_05_12_2_33_15.jpeg)
![Mononucleosis is caused by the Epstein–Barr virus. Symptoms of the infectious disease are swollen pa](https://biology-forums.com/gallery/47/medium_14755_01_10_12_7_58_03_9212184.jpeg)