MacKeown J M, Cleaton-Jones P E, Edwards A W, Turgeon-O'Brien H
Dental Research Institute, University of the Witwatersrand/South African Medical Research Council, Johannesburg, South Africa.
Paediatr Perinat Epidemiol. 1998 Jul;12(3):297-312. doi: 10.1046/j.1365-3016.1998.00128.x.
Food habits change over time. This paper reports results of nutritional studies among 5-year-old urban black children in 1984 and 1995 in the Johannesburg/Soweto area. The objective was to compare energy, macro- and micronutrient intake of 5-year-old urban black South African children. Dietary intake was assessed by detailed dietary histories in 1984 and food frequency questionnaires in 1995, conducted by trained interviewers. The intake of energy, macro- and most micronutrients was higher in 1995 than in 1984, except for vitamin A, ascorbic acid, copper and iron. Fat intake increased from 52 g/day in 1984 to 95 g/day in 1995. Only biotin and vitamin D fell below 67% of the recommended dietary allowances (RDA) for 4- to 6-year-olds, but mean intakes concealed the high percentage of children that had intakes below the RDA in 1984 and 1995. Urban black 5-year-old South African children consumed a low-fat (30% of total energy), high-carbohydrate (61% of total energy) diet in 1984, but a typical westernised diet by 1995 (fat 41% and carbohydrate 52% of total energy). With these changes, current reliable nutrition information is needed to assess the existing and future health needs of all South Africans.
饮食习惯会随时间而改变。本文报告了1984年和1995年在约翰内斯堡/索韦托地区对5岁城市黑人儿童进行的营养研究结果。目的是比较南非城市5岁黑人儿童的能量、常量营养素和微量营养素摄入量。1984年通过详细的饮食史评估饮食摄入量,1995年由经过培训的访谈员通过食物频率问卷进行评估。1995年能量、常量营养素和大多数微量营养素的摄入量高于1984年,但维生素A、抗坏血酸、铜和铁除外。脂肪摄入量从1984年的52克/天增加到1995年的95克/天。只有生物素和维生素D的摄入量低于4至6岁儿童推荐膳食摄入量(RDA)的67%,但平均摄入量掩盖了1984年和1995年摄入量低于RDA的儿童的高比例。1984年,南非城市5岁黑人儿童食用低脂肪(占总能量的30%)、高碳水化合物(占总能量的61%)的饮食,但到1995年则是典型的西方化饮食(脂肪占总能量的41%,碳水化合物占总能量的52%)。随着这些变化,需要当前可靠的营养信息来评估所有南非人的现有和未来健康需求。