Changes in dietary intake during a 6-year follow-up of an older population

Lk. Fernyhough et al., Changes in dietary intake during a 6-year follow-up of an older population, EUR J CL N, 53(3), 1999, pp. 216-225
Citations number
Categorie Soggetti
Endocrynology, Metabolism & Nutrition
Journal title
ISSN journal
0954-3007 → ACNP
Year of publication
216 - 225
SICI code
Objective: To examine prospective changes in food habits and nutrient intak es in a representative New Zealand sample of community dwelling adults aged 70 y and over. Design: Longitudinal study with food intake data collected in 1988/89 and a gain in 1995/96. In an attempt to distinguish age, time and cohort effects, data were analysed longitudinally, cross-sectionally and time-sequentially . Subjects: The sample for study consisted of all non-institutionalised peopl e aged 70 years and over registered with the Mosgiel Health Centre in 1988. In 1988/89, 678 adults completed a dietary survey (85% of those eligible) and 248 adults participated again in 1995/96 (66% of those eligible). Results: Energy intakes declined longitudinally in men only; however, this decline appeared not to be an aging effect as energy intake was not found t o decrease with age cross-sectionally. Percentage of energy from protein in creased by 0.7% in women (95% confidence interval 0.2-1.2) in both the long itudinal and time-sequential analysis, suggesting a time effect. The percen tage of energy from saturated fat decreased 0.7% (95% confidence interval - 1.4 to - 0.1) and percentage of energy from polyunsaturated fat increased 8.4% (95% confidence interval 0.0-0.7) in women, and appears to be a time e ffect. However, the increase in saturated fat and decrease in polyunsaturat ed fat with advancing age seen cross-sectionally suggests a cohort effect a lso occurring. In 1995/96, more people were using margarine as a spread and vegetable oils to cook meat. Milk and milk product consumption increased ( not significantly), and meat intake decreased significantly by 5 and 4 serv ings per month in men and women, respectively. There was an increase in the proportion of people who ate breakfast cereal at feast once a week, and mo re women ate brown or wholemeal bread in 1995/96. Conclusion: Over the 6 y follow-up period studied, there was no indication of an age effect on nutrient intakes in adults aged 70 y and older; however , the changes occurring over time demonstrate that older adults, particular ly women, are making changes towards healthier food choices. Sponsorship: Health Research Council of New Zealand and the University of O tago Medical School.