Socio-economic determinants of dietary intake in the Swiss French-speaking population

La dMC participe à ce projet de recherché financé par le FNS PNR 69, National Plan on Nutrition, et visant à mieux comprendre les déterminants socioéconomiques des choix alimentaires en Suisse.

Fat-rich, energy-dense diets or diets with a high content in refined carbohydrates are considered to be among the main drivers of the increasing prevalence of cardiovascular diseases (CVD), diabetes, cancer and obesity. The dietary intake of the Swiss population appears to be far from optimal. Recent work conducted in our team indicates that adherence to nutritional guidelines is low. Although we also recently showed that dietary intake of the Swiss population is relatively stable over time, no study has so far examined dietary pattern of the Swiss population and their trends over time using objective measurements of food intake at the individual level. Further, studies conducted in various countries (but not Switzerland) have consistently shown that socioeconomic status is one of the strongest determinants of (un)healthy eating. Individuals in the most disadvantaged sections of society tend to have worse dietary behaviours than individuals in higher socioeconomic groups, leading to wide socioeconomic differences in diet-related chronic diseases. Hence, there is a need to characterize the dietary intake of the Swiss population, its socio-economic determinants, and the effects of unhealthy diet on adverse health outcomes. The objectives of our study are: 1) To describe current dietary patterns of the Swiss population; 2) To explore socio-economic determinants of eating habits; and 3) To assess the impact of unhealthy dietary patterns on cardiovascular health. Data from several population-based surveys (CoLaus study in Lausanne, Bus Santé in Geneva and the Swiss National Nutrition Survey) will be used. The first two surveys have led to a considerable number of scientific publications in high-ranking journals. The Swiss National Nutrition Survey will start in November 2013 and end in November 2014. The Study will be conducted under the responsibility of the principal investigator of this research application (Pedro Marques-Vidal), in collaboration with the Swiss Federal Office of Public Health. All surveys provide data on dietary intake, socio-economic characteristics and health outcomes of participants. Importantly, the socio-economic questions of the Swiss National Nutrition Survey have been created specifically for the NRP project. The first objective will include the description of calories, macro and micronutrients consumed, the percentage of subjects complying with the recommendations of the Swiss Society of Nutrition and dietary patterns. Based on preliminary results, we expect to find considerable differences between genders and age groups. The second objective involves examining socioeconomic differences in dietary behaviors in the populations under study, the factors underlying these socioeconomic differences and the clustering of a set of unhealthy behaviors (unhealthy eating, smoking, binge drinking and physical inactivity) in socially disadvantaged fractions of the population. The third objective will address the associations between dietary intake (nutrients and compliance to dietary recommendations) and dietary patterns with cardiovascular risk factors (obesity, hypertension, dyslipidemia, diabetes and smoking) and inflammatory markers. The main strengths of this proposal are 1) The databases for the CoLaus and Bus Santé studies have been quality-checked and can be immediately used; 2) The CoLaus and Bus Santé surveys assessed dietary intake using the same methodology in the same age groups: 3) The socio-economic characterization of the participants in the Swiss National Nutrition survey fully complies with the objectives of the NRP and 4) Due to the scarcity of dietary data in Switzerland, the epidemiological, social and scientific impact of this study is high. The new generated data (dietary quality, dietary patterns…) can be further used in other studies focusing on other variables of interest such as genetic markers (gene × diet interaction) or lifestyle measures (physical activity). Hence, this study has a considerable potential to continue unraveling important information regarding nutrition determinants and their health impact in Switzerland.

Source : FNS

Début du projet: 
Juillet, 2013
Fin du projet: 
Janvier, 2017
Fonds national suisse (FNS) ID: 
Co-requérants du projet (IUMSP): 
Requérant principal ou responsable du projet (non IUMSP): 
Marques-Vidal Pedro
Domaines et mots clés: 

Institut universitaire de médecine sociale et préventive
Route de la Corniche 10, 1010 Lausanne - Switzerland
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