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Low bioavailable testosterone levels predict future height loss in postmenopausal women
S K Jassal1, E Barrett-Connor, S L Edelstein
1Stanford University, California, USA.
Summary
Bioavailable testosterone levels predict future height loss in postmenopausal women. Lower testosterone is linked to greater height reduction, suggesting a role in bone health and osteoporosis prevention.
Area of Science:
- Endocrinology
- Gerontology
- Bone Biology
Background:
- Height loss in postmenopausal women often indicates osteoporotic vertebral fractures.
- Endogenous sex hormones play a role in bone health and aging.
Purpose of the Study:
- To investigate the relationship between endogenous sex hormones and subsequent height loss in postmenopausal women.
- To determine if bioavailable hormone levels predict future height loss.
Main Methods:
- Prospective, community-based study of 170 postmenopausal women (aged 55-80).
- Plasma sex hormone and sex hormone-binding globulin (SHBG) levels were measured.
- Height loss was assessed over 16 years; bioavailable testosterone was estimated and measured.
Main Results:
- Average height loss was 0.22 cm/year, strongly correlated with age.
- Estrone and estradiol levels did not significantly predict height loss.
- Both estimated and measured bioavailable testosterone levels independently predicted future height loss, irrespective of other factors.
Conclusions:
- Bioavailable testosterone is an independent predictor of height loss in elderly postmenopausal women.
- Reduced height loss may be linked to testosterone's direct effect on bone mineral density or remodeling.