Final answer:
Hyperparathyroidism can result in decreased bone density and increased risk of fractures.
Step-by-step explanation:
Hyperparathyroidism is a condition caused by overproduction of parathyroid hormone, resulting in excessive calcium reabsorption from bones. This can lead to decreased bone density and increased risk of fractures. Additionally, high blood calcium levels can affect the nervous system and impair its functioning. Hypocalcemia, or low blood calcium levels, is not a result of hyperparathyroidism.