American Journal of Clinical Nutrition, Vol 61, 577-581, Copyright © 1995 by The American Society for Clinical Nutrition, Inc

ORIGINAL RESEARCH COMMUNICATIONS

Differences in calcium metabolism between adolescent and adult females

CM Weaver, BR Martin, KL Plawecki, M Peacock, OB Wood, DL Smith and ME Wastney
Department of Foods and Nutrition, Purdue University, West Lafayette, IN 47907-1264.

A 3-wk metabolic study measured calcium balance in 14 white adolescent girls and 11 young adult women. Subjects were housed in a sorority to simulate a free-living environment. A 6-d menu cycle consisted of foods typically eaten by teenagers and averaged 1332 mg Ca/d. Adolescents had a significantly higher calcium balance of 326 +/- 107 mg/d (mean +/- SD) than adults, who averaged 73 +/- 104 mg/d (P < 0.001). No adult > age 21 y was in positive calcium balance. Adolescents had lower urinary calcium excretion values (P < 0.001), lower fecal calcium excretion (P < 0.01), and greater net absorption (P < 0.001) than adults. Calcium balance was negatively correlated with years postmenarche (r = -0.788, P = 0.0001) and height (r = -0.650, P = 0.001). Net calcium absorption was positively correlated with parathyroid hormone concentrations (r = 0.537, P = < 0.01). Thus, the growth demands of adolescents are met by more efficient net absorption and retention of calcium compared with young adults.

This article has been cited by other articles:

				T. Winzenberg and G. Jones Recommended Calcium Intakes in Children: Have We Set the Bar Too High? IBMS BoneKEy, February 1, 2008; 5(2): 59 - 68. [Abstract] [Full Text] [PDF]

				F. A. Tylavsky, K. M. Ryder, R. Li, V. Park, C. Womack, J. Norwood, L. D. Carbone, and S. Cheng Preliminary Findings: 25(OH)D Levels and PTH Are Indicators of Rapid Bone Accrual in Pubertal Children J. Am. Coll. Nutr., October 1, 2007; 26(5): 462 - 470. [Abstract] [Full Text] [PDF]

				M. Braun, B. R Martin, M. Kern, G. P McCabe, M. Peacock, Z. Jiang, and C. M Weaver Calcium retention in adolescent boys on a range of controlled calcium intakes. Am. J. Clinical Nutrition, August 1, 2006; 84(2): 414 - 418. [Abstract] [Full Text] [PDF]

				A. B. Loucks The Response of Luteinizing Hormone Pulsatility to 5 Days of Low Energy Availability Disappears by 14 Years of Gynecological Age J. Clin. Endocrinol. Metab., August 1, 2006; 91(8): 3158 - 3164. [Abstract] [Full Text] [PDF]

				A. J. Lanou, S. E. Berkow, and N. D. Barnard Calcium, Dairy Products, and Bone Health in Children and Young Adults: A Reevaluation of the Evidence Pediatrics, March 1, 2005; 115(3): 736 - 743. [Abstract] [Full Text] [PDF]

				V. Matkovic, P. K Goel, N. E Badenhop-Stevens, J. D Landoll, B. Li, J. Z Ilich, M. Skugor, L. A Nagode, S. L Mobley, E.-J. Ha, et al. Calcium supplementation and bone mineral density in females from childhood to young adulthood: a randomized controlled trial Am. J. Clinical Nutrition, January 1, 2005; 81(1): 175 - 188. [Abstract] [Full Text] [PDF]

				M. L. Storey, R. A. Forshee, and P. A. Anderson Associations of Adequate Intake of Calcium with Diet, Beverage Consumption, and Demographic Characteristics among Children and Adolescents J. Am. Coll. Nutr., February 1, 2004; 23(1): 18 - 33. [Abstract] [Full Text] [PDF]

				S.-C. Chang, K. O O'Brien, M. S. Nathanson, L. E Caulfield, J. Mancini, and F. R Witter Fetal femur length is influenced by maternal dairy intake in pregnant African American adolescents Am. J. Clinical Nutrition, May 1, 2003; 77(5): 1248 - 1254. [Abstract] [Full Text] [PDF]

				R. J. Bryant, M. E. Wastney, B. R. Martin, O. Wood, G. P. McCabe, M. Morshidi, D. L. Smith, M. Peacock, and C. M. Weaver Racial Differences in Bone Turnover and Calcium Metabolism in Adolescent Females J. Clin. Endocrinol. Metab., March 1, 2003; 88(3): 1043 - 1047. [Abstract] [Full Text] [PDF]

				F. F. Bezerra, F. P. Laboissiere, J. C. King, and C. M. Donangelo Pregnancy and Lactation Affect Markers of Calcium and Bone Metabolism Differently in Adolescent and Adult Women with Low Calcium Intakes J. Nutr., August 1, 2002; 132(8): 2183 - 2187. [Abstract] [Full Text] [PDF]

				J. A. Eisman Pharmacogenetics of the Vitamin D Receptor and Osteoporosis Drug Metab. Dispos., April 1, 2001; 29(4): 505 - 512. [Abstract] [Full Text]

				M. E. Wastney, B. R. Martin, M. Peacock, D. Smith, X.-Y. Jiang, L. A. Jackman, and C. M. Weaver Changes in Calcium Kinetics in Adolescent Girls Induced by High Calcium Intake J. Clin. Endocrinol. Metab., December 1, 2000; 85(12): 4470 - 4475. [Abstract] [Full Text]

				J. A. Eisman Genetics of Osteoporosis Endocr. Rev., December 1, 1999; 20(6): 788 - 804. [Abstract] [Full Text]

				Intake of Dietary Calcium to Reduce the Incidence of Osteoporosis: Council on Scientific Affairs, American Medical Association Arch Fam Med, September 1, 1997; 6(5): 495 - 499. [Abstract] [PDF]