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Published on: September 20, 2024
The skeletal consequences of thyrotoxicosis
Jonathan J Nicholls1, Mary Jane Brassill, Graham R Williams
1Molecular Endocrinology Group, Department of Medicine, Imperial College London, Hammersmith Campus, Room 7N2b, Commonwealth Building, Du Cane Road, London W12 0NN, UK.
The Journal of Endocrinology
|March 29, 2012
Summary
Thyroid hormones are crucial for bone health. Both hyperthyroidism and thyroxine (T4) therapy can negatively impact bone mineral density (BMD) and increase fracture risk, especially in postmenopausal women.
Area of Science:
- Endocrinology
- Bone Biology
- Metabolic Diseases
Background:
- Thyroid hormones are vital for skeletal development and maintenance.
- Thyrotoxicosis is linked to high bone turnover and osteoporosis.
- Subclinical hyperthyroidism and thyroxine (T4) therapy may also affect bone health.
Purpose of the Study:
- To review the role of thyroid hormones in bone metabolism.
- To discuss the skeletal consequences of thyroid dysfunction.
- To explore the impact of thyroxine (T4) on bone mineral density (BMD).
Main Methods:
- Literature review of established and recent studies.
- Analysis of population studies on thyroid axis set points.
- Discussion of cellular and molecular mechanisms.
Main Results:
- Hyperthyroidism causes high bone turnover osteoporosis and fracture.
- Subclinical hyperthyroidism and T4 therapy may decrease BMD.
- Upper-normal thyroid axis set points correlate with reduced BMD and fracture risk.
Conclusions:
- Thyroid hormone's role in bone is complex and not fully understood.
- Thyroid dysfunction poses significant risks to bone health.
- Further research into thyroid hormone's cellular mechanisms in bone is warranted.
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