Skip to main content
Top
Published in: Osteoporosis International 2/2007

01-02-2007 | Original Article

Menstrual cycle lengths and bone mineral density: a cross-sectional, population-based study in rural Chinese women ages 30–49 years

Authors: F. Ouyang, X. Wang, L. Arguelles, L. L. Rosul, S. A. Venners, C. Chen, Y.-H. Hsu, H. Terwedow, D. Wu, G. Tang, J. Yang, H. Xing, T. Zang, B. Wang, X. Xu

Published in: Osteoporosis International | Issue 2/2007

Login to get access

Abstract

Introduction

The menstrual cycle involves periodic fluctuations in estrogen and progesterone levels. Longer cycles have been associated with longer follicular phase, delayed estrogen peak and a lower mean oestradiol level of the entire cycle.

Methods

We hypothesized that prolonged menstrual cycle length is associated with decreased bone mineral density (BMD) in a population of pre- and perimenopausal women. This population-based cross-sectional study was conducted in rural Anhui province, China. It includes 4,771 women, aged 30 to 49 years, who did not smoke or drink alcohol, and did not use oral contraceptives or breastfeed during the previous year. Dual-energy X-ray absorptionometry (DEXA) BMD measurements were taken at four skeletal sites: whole body, total hip, femoral neck and lumbar spine. Menstrual cycle characteristics (polymenorrhea, short normal, long normal, oligomenorrhea, 90-day amenorrhea, irregular cycle) in the prior year were assessed by questionnaire.

Results

Prolonged menstrual cycle was consistently associated with decreased BMD at whole body, total hip, and femoral neck in both age 30–39, and age 40–49 stratum (ptrend<0.05). Prolonged menstrual cycle was also associated with decreased lumbar spine BMD for women aged 40–49 (ptrend<0.05). Among women with normal cycles aged 30–39, menstrual cycle length in the previous year was inversely associated with whole-body BMD (p<0.05). Women with 90-day amenorrhea had significantly lower mean total hip and femoral neck BMD relative to women with short normal cycles in the 30–39 age group; and had significantly lower whole body and total hip BMD relative to short normal cycles in the 40–49 age group. BMD in poylmenorrheic women did not differ from BMD in women with short normal cycles at any of the skeletal sites.

Conclusions

We conclude that prolonged menstrual cycle length is associated with decreased BMD in pre- and perimenopausal women in this population.
Literature
1.
go back to reference Sowers M, Randolph JF Jr, Crutchfield M, Jannausch ML, Shapiro B, Zhang B, La Pietra M (1998) Urinary ovarian and gonadotropin hormone levels in premenopausal women with low bone mass. J Bone Miner Res 13:1191–1202PubMedCrossRef Sowers M, Randolph JF Jr, Crutchfield M, Jannausch ML, Shapiro B, Zhang B, La Pietra M (1998) Urinary ovarian and gonadotropin hormone levels in premenopausal women with low bone mass. J Bone Miner Res 13:1191–1202PubMedCrossRef
2.
go back to reference Recker R, Lappe J, Davies K, Heaney R (2000) Characterization of perimenopausal bone loss: a prospective study. J Bone Miner Res 15:1965–1973PubMedCrossRef Recker R, Lappe J, Davies K, Heaney R (2000) Characterization of perimenopausal bone loss: a prospective study. J Bone Miner Res 15:1965–1973PubMedCrossRef
3.
go back to reference Prior JC, Vigna YM, Schechter MT, Burgess AE (1990) Spinal bone loss and ovulatory disturbances. N Engl J Med 323:1221–1227PubMedCrossRef Prior JC, Vigna YM, Schechter MT, Burgess AE (1990) Spinal bone loss and ovulatory disturbances. N Engl J Med 323:1221–1227PubMedCrossRef
4.
go back to reference Stepan JJ, Musilova J, Pacovsky V (1989) Bone demineralization, biochemical indices of bone remodeling, and estrogen replacement therapy in adults with Turner’s syndrome. J Bone Miner Res 4:193–198PubMed Stepan JJ, Musilova J, Pacovsky V (1989) Bone demineralization, biochemical indices of bone remodeling, and estrogen replacement therapy in adults with Turner’s syndrome. J Bone Miner Res 4:193–198PubMed
5.
go back to reference Myburgh KH, Bachrach LK, Lewis B, Kent K, Marcus R (1993) Low bone mineral density at axial and appendicular sites in amenorrheic athletes. Med Sci Sports Exerc 25:1197–1202PubMed Myburgh KH, Bachrach LK, Lewis B, Kent K, Marcus R (1993) Low bone mineral density at axial and appendicular sites in amenorrheic athletes. Med Sci Sports Exerc 25:1197–1202PubMed
6.
go back to reference Bachrach LK, Guido D, Katzman D, Litt IF, Marcus R (1990) Decreased bone density in adolescent girls with anorexia nervosa. Pediatrics 86:440–447PubMed Bachrach LK, Guido D, Katzman D, Litt IF, Marcus R (1990) Decreased bone density in adolescent girls with anorexia nervosa. Pediatrics 86:440–447PubMed
7.
go back to reference Schachter M, Shoham Z (1994) Amenorrhea during the reproductive years-is it safe? Fertil Steril 62:1–16PubMed Schachter M, Shoham Z (1994) Amenorrhea during the reproductive years-is it safe? Fertil Steril 62:1–16PubMed
8.
go back to reference Drinkwater BL, Nilson K, Chesnut CH 3rd, Bremner WJ, Shainholtz S, Southworth MB (1984) Bone mineral content of amenorrheic and eumenorrheic athletes. N Engl J Med 311:277–281PubMedCrossRef Drinkwater BL, Nilson K, Chesnut CH 3rd, Bremner WJ, Shainholtz S, Southworth MB (1984) Bone mineral content of amenorrheic and eumenorrheic athletes. N Engl J Med 311:277–281PubMedCrossRef
9.
go back to reference Bennell KL, Malcolm SA, Thomas SA, Reid SJ, Brukner PD, Ebeling PR, Wark JD (1996) Risk factors for stress fractures in track and field athletes. A twelve-month prospective study. Am J Sports Med 24:810–818PubMedCrossRef Bennell KL, Malcolm SA, Thomas SA, Reid SJ, Brukner PD, Ebeling PR, Wark JD (1996) Risk factors for stress fractures in track and field athletes. A twelve-month prospective study. Am J Sports Med 24:810–818PubMedCrossRef
10.
go back to reference Petit MA, Prior JC, Barr SI (1999) Running and ovulation positively change cancellous bone in premenopausal women. Med Sci Sports Exerc 31:780–787PubMedCrossRef Petit MA, Prior JC, Barr SI (1999) Running and ovulation positively change cancellous bone in premenopausal women. Med Sci Sports Exerc 31:780–787PubMedCrossRef
11.
go back to reference Prior JC, Vigna YM, Barr SI, Kennedy S, Schulzer M, Li DK (1996) Ovulatory premenopausal women lose cancellous spinal bone: a five year prospective study. Bone 18:261–267PubMedCrossRef Prior JC, Vigna YM, Barr SI, Kennedy S, Schulzer M, Li DK (1996) Ovulatory premenopausal women lose cancellous spinal bone: a five year prospective study. Bone 18:261–267PubMedCrossRef
12.
go back to reference Hawker GA, Forsmo S, Cadarette SM, Schei B, Jaglal SB, Forsen L, Langhammer A (2002) Correlates of forearm bone mineral density in young Norwegian women: the Nord-Trondelag Health Study. Am J Epidemiol 156:418–427PubMedCrossRef Hawker GA, Forsmo S, Cadarette SM, Schei B, Jaglal SB, Forsen L, Langhammer A (2002) Correlates of forearm bone mineral density in young Norwegian women: the Nord-Trondelag Health Study. Am J Epidemiol 156:418–427PubMedCrossRef
13.
go back to reference De Souza MJ, Miller BE, Sequenzia LC, Luciano AA, Ulreich S, Stier S, Prestwood K, Lasley BL (1997) Bone health is not affected by luteal phase abnormalities and decreased ovarian progesterone production in female runners. J Clin Endocrinol Metab 82:2867–2876PubMedCrossRef De Souza MJ, Miller BE, Sequenzia LC, Luciano AA, Ulreich S, Stier S, Prestwood K, Lasley BL (1997) Bone health is not affected by luteal phase abnormalities and decreased ovarian progesterone production in female runners. J Clin Endocrinol Metab 82:2867–2876PubMedCrossRef
14.
go back to reference Winters KM, Adams WC, Meredith CN, Loan MD, Lasley BL (1996) Bone density and cyclic ovarian function in trained runners and active controls. Med Sci Sports Exerc 28:776–785PubMed Winters KM, Adams WC, Meredith CN, Loan MD, Lasley BL (1996) Bone density and cyclic ovarian function in trained runners and active controls. Med Sci Sports Exerc 28:776–785PubMed
15.
go back to reference Waller K, Reim J, Fenster L, Swan SH, Brumback B, Windham GC, Lasley B, Ettinger B, Marcus R (1996) Bone mass and subtle abnormalities in ovulatory function in healthy women. J Clin Endocrinol Metab 81:663–668PubMedCrossRef Waller K, Reim J, Fenster L, Swan SH, Brumback B, Windham GC, Lasley B, Ettinger B, Marcus R (1996) Bone mass and subtle abnormalities in ovulatory function in healthy women. J Clin Endocrinol Metab 81:663–668PubMedCrossRef
16.
go back to reference Lenton EA, Landgren BM, Sexton L, Harper R (1984) Normal variation in the length of the follicular phase of the menstrual cycle: effect of chronological age. Br J Obstet Gynaecol 91:681–684PubMed Lenton EA, Landgren BM, Sexton L, Harper R (1984) Normal variation in the length of the follicular phase of the menstrual cycle: effect of chronological age. Br J Obstet Gynaecol 91:681–684PubMed
17.
18.
go back to reference Landgren BM, Collins A, Csemiczky G, Burger HG, Baksheev L, Robertson DM (2004) Menopause transition: annual changes in serum hormonal patterns over the menstrual cycle in women during a nine-year period prior to menopause. J Clin Endocrinol Metab 89:2763–2769PubMedCrossRef Landgren BM, Collins A, Csemiczky G, Burger HG, Baksheev L, Robertson DM (2004) Menopause transition: annual changes in serum hormonal patterns over the menstrual cycle in women during a nine-year period prior to menopause. J Clin Endocrinol Metab 89:2763–2769PubMedCrossRef
19.
go back to reference Prior JC (1998) Perimenopause: the complex endocrinology of the menopausal transition. Endocr Rev 19:397–428PubMedCrossRef Prior JC (1998) Perimenopause: the complex endocrinology of the menopausal transition. Endocr Rev 19:397–428PubMedCrossRef
20.
go back to reference Seifert-Klauss V, Mueller JE, Luppa P, Probst R, Wilker J, Hob C, Treumann T, Kastner C, Ulm K (2002) Bone metabolism during the perimenopausal transition: a prospective study. Maturitas 41:23–33PubMedCrossRef Seifert-Klauss V, Mueller JE, Luppa P, Probst R, Wilker J, Hob C, Treumann T, Kastner C, Ulm K (2002) Bone metabolism during the perimenopausal transition: a prospective study. Maturitas 41:23–33PubMedCrossRef
21.
go back to reference Gambacciani M, Spinetti A, Taponeco F, Cappagli B, Maffei S, Manetti P, Piaggesi L, Fioretti P (1994) Bone loss in perimenopausal women: a longitudinal study. Maturitas 18:191–197PubMedCrossRef Gambacciani M, Spinetti A, Taponeco F, Cappagli B, Maffei S, Manetti P, Piaggesi L, Fioretti P (1994) Bone loss in perimenopausal women: a longitudinal study. Maturitas 18:191–197PubMedCrossRef
22.
go back to reference Cummings SR, Black DM, Nevitt MC, Browner W, Cauley J, Ensrud K, Genant HK, Palermo L, Scott J, Vogt TM (1993) Bone density at various sites for prediction of hip fractures. The study of Osteoporotic Fractures Research Group. Lancet 341:72–75PubMedCrossRef Cummings SR, Black DM, Nevitt MC, Browner W, Cauley J, Ensrud K, Genant HK, Palermo L, Scott J, Vogt TM (1993) Bone density at various sites for prediction of hip fractures. The study of Osteoporotic Fractures Research Group. Lancet 341:72–75PubMedCrossRef
23.
go back to reference Fox KM, Magaziner J, Sherwin R, Scott JC, Plato CC, Nevitt M, Cummings S (1993) Reproductive correlates of bone mass in elderly women. J Bone Miner Res 8:901–908PubMedCrossRef Fox KM, Magaziner J, Sherwin R, Scott JC, Plato CC, Nevitt M, Cummings S (1993) Reproductive correlates of bone mass in elderly women. J Bone Miner Res 8:901–908PubMedCrossRef
24.
go back to reference Polatti F, Perotti F, Filippa N, Gallina D, Nappi R (1995) Bone mass and long-term monophasic oral contraceptive treatment in young women. Contraception 51:221–224PubMedCrossRef Polatti F, Perotti F, Filippa N, Gallina D, Nappi R (1995) Bone mass and long-term monophasic oral contraceptive treatment in young women. Contraception 51:221–224PubMedCrossRef
25.
go back to reference Prior JC, Kirkland SA, Joseph L, Kreiger N, Murray TM, Hanley DA, Adachi JD, Vigna YM, Berger C, Blondeau L, Jackson SA, Tenenhouse A (2001) Oral contraceptive use and bone mineral density in premenopausal women: cross-sectional, population-based data from the Canadian Multicentre Osteoporosis Study. CMAJ 165:1023–1029PubMed Prior JC, Kirkland SA, Joseph L, Kreiger N, Murray TM, Hanley DA, Adachi JD, Vigna YM, Berger C, Blondeau L, Jackson SA, Tenenhouse A (2001) Oral contraceptive use and bone mineral density in premenopausal women: cross-sectional, population-based data from the Canadian Multicentre Osteoporosis Study. CMAJ 165:1023–1029PubMed
26.
go back to reference Karlsson MK, Ahlborg HG, Karlsson C (2005) Maternity and bone mineral density. Acta Orthop 76:2–13PubMedCrossRef Karlsson MK, Ahlborg HG, Karlsson C (2005) Maternity and bone mineral density. Acta Orthop 76:2–13PubMedCrossRef
27.
go back to reference Chen C, Wang X, Wang L, Yang F, Tang G, Xing H, Ryan L, Lasley B, Overstreet J, Stanford J, Xu X (2005) Effect of environmental tobacco smoke on levels of urinary hormone markers. Environ Health Perspect 113:412–417PubMedCrossRef Chen C, Wang X, Wang L, Yang F, Tang G, Xing H, Ryan L, Lasley B, Overstreet J, Stanford J, Xu X (2005) Effect of environmental tobacco smoke on levels of urinary hormone markers. Environ Health Perspect 113:412–417PubMedCrossRef
28.
go back to reference Kanis JA, Johnell O, Oden A, Johansson H, De Laet C, Eisman JA, Fujiwara S, Kroger H, McCloskey EV, Mellstrom D, Melton LJ, Pols H, Reeve J, Silman A, Tenenhouse A (2005) Smoking and fracture risk: a meta-analysis. Osteoporos Int 16:155–162PubMedCrossRef Kanis JA, Johnell O, Oden A, Johansson H, De Laet C, Eisman JA, Fujiwara S, Kroger H, McCloskey EV, Mellstrom D, Melton LJ, Pols H, Reeve J, Silman A, Tenenhouse A (2005) Smoking and fracture risk: a meta-analysis. Osteoporos Int 16:155–162PubMedCrossRef
29.
go back to reference Kanis JA, Johansson H, Johnell O, Oden A, De Laet C, Eisman JA, Pols H, Tenenhouse A (2005) Alcohol intake as a risk factor for fracture. Osteoporos Int 16:737–742PubMedCrossRef Kanis JA, Johansson H, Johnell O, Oden A, De Laet C, Eisman JA, Pols H, Tenenhouse A (2005) Alcohol intake as a risk factor for fracture. Osteoporos Int 16:737–742PubMedCrossRef
30.
go back to reference Cleveland WS (1979) Robust locally weighted regression and smoothing scatterplots. J Am Stat Assoc 74:829–836CrossRef Cleveland WS (1979) Robust locally weighted regression and smoothing scatterplots. J Am Stat Assoc 74:829–836CrossRef
31.
go back to reference Rodriguez RN, Strokes ME (1998) Recent enhancements and new directions in SAS/STAT software, part II. Nonparametric modeling procedure. In Proceedings of the 23rd SAS users group international conference, Nashville, Tennessee, pp 1262–1270 Rodriguez RN, Strokes ME (1998) Recent enhancements and new directions in SAS/STAT software, part II. Nonparametric modeling procedure. In Proceedings of the 23rd SAS users group international conference, Nashville, Tennessee, pp 1262–1270
32.
go back to reference SAS Institute (1997) SAS/STAT software: changes and enhancements through release 6.12. Cary, NC SAS Institute (1997) SAS/STAT software: changes and enhancements through release 6.12. Cary, NC
33.
go back to reference Gambacciani M, Spinetti A, Taponeco F, Cappagli B, Piaggesi L, Fioretti P (1994) Longitudinal evaluation of perimenopausal vertebral bone loss: effects of a low-dose oral contraceptive preparation on bone mineral density and metabolism. Obstet Gynecol 83:392–396PubMed Gambacciani M, Spinetti A, Taponeco F, Cappagli B, Piaggesi L, Fioretti P (1994) Longitudinal evaluation of perimenopausal vertebral bone loss: effects of a low-dose oral contraceptive preparation on bone mineral density and metabolism. Obstet Gynecol 83:392–396PubMed
34.
go back to reference Lohstroh PN, Chen J, Ba J, Ryan L, Xu X, Overstreet J, Lasley B (2003) Bone resorption is affected by follicular phase length in female rotating shift workers. Environ Health Perspect 111:618–622PubMedCrossRef Lohstroh PN, Chen J, Ba J, Ryan L, Xu X, Overstreet J, Lasley B (2003) Bone resorption is affected by follicular phase length in female rotating shift workers. Environ Health Perspect 111:618–622PubMedCrossRef
35.
go back to reference Landgren BM, Unden AL, Diczfalusy E (1980) Hormonal profile of the cycle in 68 normally menstruating women. Acta Endocrinol 94:89–98PubMed Landgren BM, Unden AL, Diczfalusy E (1980) Hormonal profile of the cycle in 68 normally menstruating women. Acta Endocrinol 94:89–98PubMed
36.
go back to reference Watts NB (1999) Clinical utility of biochemical markers of bone remodeling. Clin Chem 45:1359–1368PubMed Watts NB (1999) Clinical utility of biochemical markers of bone remodeling. Clin Chem 45:1359–1368PubMed
37.
go back to reference Sowers M, Randolph JF Jr, Crutchfield M, Jannausch ML, Shapiro B, Zhang B, La Pietra M (1998) Urinary ovarian and gonadotropin hormone levels in premenopausal women with low bone mass. J Bone Miner Res 13:1191–1202PubMedCrossRef Sowers M, Randolph JF Jr, Crutchfield M, Jannausch ML, Shapiro B, Zhang B, La Pietra M (1998) Urinary ovarian and gonadotropin hormone levels in premenopausal women with low bone mass. J Bone Miner Res 13:1191–1202PubMedCrossRef
38.
go back to reference Slemenda CW, Reister TK, Hui SL, Miller JZ, Christian JC, Johnston CC Jr (1994) Influences on skeletal mineralization in children and adolescents: evidence for varying effects of sexual maturation and physical activity. J Pediatr 125:201–207PubMedCrossRef Slemenda CW, Reister TK, Hui SL, Miller JZ, Christian JC, Johnston CC Jr (1994) Influences on skeletal mineralization in children and adolescents: evidence for varying effects of sexual maturation and physical activity. J Pediatr 125:201–207PubMedCrossRef
39.
go back to reference Burger HG, Robertson DM, Baksheev L, Collins A, Csemiczky G, Landgren BM (2005) The relationship between the endocrine characteristics and the regularity of menstrual cycles in the approach to menopause. Menopause 12:267–274PubMedCrossRef Burger HG, Robertson DM, Baksheev L, Collins A, Csemiczky G, Landgren BM (2005) The relationship between the endocrine characteristics and the regularity of menstrual cycles in the approach to menopause. Menopause 12:267–274PubMedCrossRef
40.
go back to reference Hsu Y-H, Venners SA, Terwedow HA, Feng Y, Niu T, Li Z, Laird N, Brain JD, Cummings SR, Bouxsein ML, Rosen CJ, Xu X (2006) Relation of body composition, fat mass, and serum lipids to osteoporotic fractures and bone mineral density in Chinese men and women. Am J Clin Nutr 83:146–154PubMed Hsu Y-H, Venners SA, Terwedow HA, Feng Y, Niu T, Li Z, Laird N, Brain JD, Cummings SR, Bouxsein ML, Rosen CJ, Xu X (2006) Relation of body composition, fat mass, and serum lipids to osteoporotic fractures and bone mineral density in Chinese men and women. Am J Clin Nutr 83:146–154PubMed
41.
go back to reference Burger HG, Dudley EC, Hopper JL, Shelley JM, Green A, Smith A, Dennerstein L, Morse C (1995) The endocrinology of the menopausal transition: a cross-sectional study of a population-based sample. J Clin Endocrinol Metab 80:3537–3545PubMedCrossRef Burger HG, Dudley EC, Hopper JL, Shelley JM, Green A, Smith A, Dennerstein L, Morse C (1995) The endocrinology of the menopausal transition: a cross-sectional study of a population-based sample. J Clin Endocrinol Metab 80:3537–3545PubMedCrossRef
42.
go back to reference Santoro N, Rosenberg J, Adel T, Skurnick JH (1996) Characterization of reproductive hormonal dynamics in the perimenopause. J Clin Endocrinol Metab 81:1495–1501PubMedCrossRef Santoro N, Rosenberg J, Adel T, Skurnick JH (1996) Characterization of reproductive hormonal dynamics in the perimenopause. J Clin Endocrinol Metab 81:1495–1501PubMedCrossRef
43.
go back to reference Sowers M, Randolph JF Jr, Crutchfield M, Jannausch ML, Shapiro B, Zhang B, La Pietra M (1998) Urinary ovarian and gonadotropin hormone levels in premenopausal women with low bone mass. J Bone Miner Res 13:1191–1202PubMedCrossRef Sowers M, Randolph JF Jr, Crutchfield M, Jannausch ML, Shapiro B, Zhang B, La Pietra M (1998) Urinary ovarian and gonadotropin hormone levels in premenopausal women with low bone mass. J Bone Miner Res 13:1191–1202PubMedCrossRef
44.
go back to reference Prior JC, Vigna YM, Schechter MT, Burgess AE (1990) Spinal bone loss and ovulatory disturbances. N Engl J Med 323:1221–1227PubMedCrossRef Prior JC, Vigna YM, Schechter MT, Burgess AE (1990) Spinal bone loss and ovulatory disturbances. N Engl J Med 323:1221–1227PubMedCrossRef
45.
go back to reference Munster K, Schmidt L, Helm P (1992) Length and variation in the menstrual cycle-a cross-sectional study from a Danish county. Br J Obstet Gynaecol 99:422–429PubMed Munster K, Schmidt L, Helm P (1992) Length and variation in the menstrual cycle-a cross-sectional study from a Danish county. Br J Obstet Gynaecol 99:422–429PubMed
46.
go back to reference Prior JC, Vigna YM, Barr SI, Kennedy S, Schulzer M, Li DK (1996) Ovulatory premenopausal women lose cancellous spinal bone: a five year prospective study. Bone 18:261–267PubMedCrossRef Prior JC, Vigna YM, Barr SI, Kennedy S, Schulzer M, Li DK (1996) Ovulatory premenopausal women lose cancellous spinal bone: a five year prospective study. Bone 18:261–267PubMedCrossRef
47.
go back to reference Hui SL, Slemenda CW, Johnston CC Jr (1989) Baseline measurement of bone mass predicts fracture in white women. Ann Intern Med 111:355–361PubMed Hui SL, Slemenda CW, Johnston CC Jr (1989) Baseline measurement of bone mass predicts fracture in white women. Ann Intern Med 111:355–361PubMed
48.
go back to reference Ross PD, Davis JW, Epstein RS, Wasnich RD (1991) Pre-existing fractures and bone mass predict vertebral fracture incidence in women. Ann Intern Med 114:919–923PubMed Ross PD, Davis JW, Epstein RS, Wasnich RD (1991) Pre-existing fractures and bone mass predict vertebral fracture incidence in women. Ann Intern Med 114:919–923PubMed
49.
go back to reference Abraham GE (1978) The normal menstrual cycle. In: Givens JR (ed) Endocrine causes of menstrual disorders. Year Book Medical, Chicago, pp 15–44 Abraham GE (1978) The normal menstrual cycle. In: Givens JR (ed) Endocrine causes of menstrual disorders. Year Book Medical, Chicago, pp 15–44
Metadata
Title
Menstrual cycle lengths and bone mineral density: a cross-sectional, population-based study in rural Chinese women ages 30–49 years
Authors
F. Ouyang
X. Wang
L. Arguelles
L. L. Rosul
S. A. Venners
C. Chen
Y.-H. Hsu
H. Terwedow
D. Wu
G. Tang
J. Yang
H. Xing
T. Zang
B. Wang
X. Xu
Publication date
01-02-2007
Publisher
Springer-Verlag
Published in
Osteoporosis International / Issue 2/2007
Print ISSN: 0937-941X
Electronic ISSN: 1433-2965
DOI
https://doi.org/10.1007/s00198-006-0210-2

Other articles of this Issue 2/2007

Osteoporosis International 2/2007 Go to the issue