Abstract
Groups of South African Bantu boys and girls of 14 years, compared with local Caucasian children, have lower cortical thickness, cortical score, and crosssection and volume scores for second metacarpal. Yet, when these parameters on groups of aged Bantu men and women, 70-79 years, are compared with published values on corresponding Caucasians, there are no significant differences. Further, aged Bantu have lower prevalences of hip fracture and severe collapse of vertebral bodies. Since a low calcium intake, and in aged Bantu women numerous pregnancies and long lactations, are compatible with satisfactory bone data, it is questioned whether the present insistence on a high calcium intake is justified.
Full text
PDF





Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- BARNETT E., NORDIN B. E. The radiological diagnosis of osteoporosis: a new approach. Clin Radiol. 1960 Jul;11:166–174. doi: 10.1016/s0009-9260(60)80012-8. [DOI] [PubMed] [Google Scholar]
- Begum A., Pereira S. M. Calcium balance studies on children accustomed to low calcium intakes. Br J Nutr. 1969 Nov;23(4):905–911. doi: 10.1079/bjn19690101. [DOI] [PubMed] [Google Scholar]
- Bernstein D. S., Sadowsky N., Hegsted D. M., Guri C. D., Stare F. J. Prevalence of osteoporosis in high- and low-fluoride areas in North Dakota. JAMA. 1966 Oct 31;198(5):499–504. [PubMed] [Google Scholar]
- CHRIST H. H. A discussion of causes of error in the determination of chronological age in children by means of x-ray studies of carpal-bone development. S Afr Med J. 1961 Oct 14;35:854–857. [PubMed] [Google Scholar]
- Dent C. E., Engelbrecht H. E., Godfrey R. C. Osteoporosis of lumbar vertebrae and calcification of abdominal aorta in women living in Durban. Br Med J. 1968 Oct 12;4(5623):76–79. doi: 10.1136/bmj.4.5623.76. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Dequeker J. V. Parathyroid activity and postmenopausal osteoporosis. Lancet. 1970 Jul 25;2(7665):211–212. doi: 10.1016/s0140-6736(70)92562-6. [DOI] [PubMed] [Google Scholar]
- Dickerson J. W., John P. M. The effect of protein-calorie malnutrition on the composition of the human femur. Br J Nutr. 1969 Nov;23(4):917–924. doi: 10.1079/bjn19690103. [DOI] [PubMed] [Google Scholar]
- Exton-Smith A. N., Millard P. H., Payne P. R., Wheeler E. F. Method for measuring quantity of bone. Lancet. 1969 Nov 29;2(7631):1153–1154. doi: 10.1016/s0140-6736(69)92482-9. [DOI] [PubMed] [Google Scholar]
- Exton-Smith A. N., Millard P. H., Payne P. R., Wheeler E. F. Pattern of development and loss of bone with age. Lancet. 1969 Nov 29;2(7631):1154–1157. doi: 10.1016/s0140-6736(69)92483-0. [DOI] [PubMed] [Google Scholar]
- Fellingham S. A. Statistical planning of the nutrition status surveys on Pretoria school children. S Afr Med J. 1966 Mar 19;40(11):228–234. [PubMed] [Google Scholar]
- GARN S. M., PAO E. M., RIHL M. E. COMPACT BONE IN CHINESE AND JAPANESE. Science. 1964 Mar 27;143(3613):1439–1440. doi: 10.1126/science.143.3613.1439. [DOI] [PubMed] [Google Scholar]
- Garn S. M. Calcium requirements for bone building and skeletal maintenance. Am J Clin Nutr. 1970 Sep;23(9):1149–1150. doi: 10.1093/ajcn/23.9.1149. [DOI] [PubMed] [Google Scholar]
- Hossain M., Smith D. A., Nordin B. E. Parathyroid activity and postmenopausal osteoporosis. Lancet. 1970 Apr 18;1(7651):809–811. doi: 10.1016/s0140-6736(70)92410-4. [DOI] [PubMed] [Google Scholar]
- LUYKEN R., LUYKEN-KONING F. W. Studies on the physiology of nutrition in Surinam. VII. Metabolism of calcium. Trop Geogr Med. 1961 Mar;13:46–54. [PubMed] [Google Scholar]
- Lubbe A. M. A survey of the nutritional status of white school children in Pretoria: description and comparative study of two dietary survey techniques. S Afr Med J. 1968 Jun 22;42(24):616–622. [PubMed] [Google Scholar]
- Luyken R., Luyken-Koning F. W. Studies on physiology of nutrition in Surinam. XII. Nutrition and development of muscular, skeletal, and adipose tissues in Surinam children. Am J Clin Nutr. 1969 Apr;22(4):519–526. doi: 10.1093/ajcn/22.4.519. [DOI] [PubMed] [Google Scholar]
- Morgan D. B., Spiers F. W., Pulvertaft C. N., Fourman P. The amount of bone in the metacarpal and the phalanx according to age and sex. Clin Radiol. 1967 Jan;18(1):101–108. doi: 10.1016/s0009-9260(67)80137-5. [DOI] [PubMed] [Google Scholar]
- Nordin B. E., MacGregor J., Smith D. A. The incidence of osteoporosis in normal women: its relation to age and the menopause. Q J Med. 1966 Jan;35(137):25–38. [PubMed] [Google Scholar]
- SRIKANTIA S. G., SIDDIQUI A. H. METABOLIC STUDIES IN SKELETAL FLUOROSIS. Clin Sci. 1965 Jun;28:477–485. [PubMed] [Google Scholar]
- Smith D. A., Harrison I. Mineral metabolism in relation to ageing. Proc Nutr Soc. 1968 Sep;27(2):201–210. doi: 10.1079/pns19680048. [DOI] [PubMed] [Google Scholar]
- Smith R. W., Jr, Rizek J. Epidemiologic studies of osteoporosis in Women of Puerto Rico and southeastern Michigan with special reference to age, race, national origin and to other related or associated findings. Clin Orthop Relat Res. 1966 Mar-Apr;45:31–48. [PubMed] [Google Scholar]
- Spencer H., Lewin I., Fowler J., Samachson J. Influence of dietary calcium intake on Ca47 absorption in man. Am J Med. 1969 Feb;46(2):197–205. doi: 10.1016/0002-9343(69)90004-7. [DOI] [PubMed] [Google Scholar]
- VIRTAMA P., MAHONEN H. Thickness of the cortical layer as an estimate of mineral content of human finger bones. Br J Radiol. 1960 Jan;33:60–62. doi: 10.1259/0007-1285-33-385-60. [DOI] [PubMed] [Google Scholar]
- VIRTAMA P., TELKKA A. Cortical thickness as an estimate of mineral content of human humerous and femur. Br J Radiol. 1962 Sep;35:632–633. doi: 10.1259/0007-1285-35-417-632. [DOI] [PubMed] [Google Scholar]
- WALKER A. R., ARVIDSSON U. B., DRAPER W. L. The composition of breast milk of South African Bantu mothers. Trans R Soc Trop Med Hyg. 1954 Sep;48(5):395–399. doi: 10.1016/0035-9203(54)90138-8. [DOI] [PubMed] [Google Scholar]
- WALKER A. R., ARVIDSSON U. B. Studies on human bone from South African Bantu subjects. I. Chemical composition of ribs from subjects habituated to a diet low in calcium. Metabolism. 1954 Sep;3(5):385–391. [PubMed] [Google Scholar]
- WALKER A. R. Does a low intake of calcium retard growth or conduce to stuntedness? Am J Clin Nutr. 1954 Jul-Aug;2(4):265–271. doi: 10.1093/ajcn/2.4.265. [DOI] [PubMed] [Google Scholar]
- WIDDOWSON E. M., SPRAY C. M. Chemical development in utero. Arch Dis Child. 1951 Jun;26(127):205–214. doi: 10.1136/adc.26.127.205. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Walker A. R. Nutritional, biochemical, and other studies on South African populations. S Afr Med J. 1966 Sep 17;40(34):814–852. [PubMed] [Google Scholar]