Adult food consumption by household composition: an analysis of the first National Dietary Survey, Brazil, 2008-2009.

Objective: To evaluate differences in food consumption of Brazilian adults according to the presence of children and adolescents in the household.

Design: Averages of two non-consecutive days of food records from the first Brazilian National Dietary Survey were analysed and classified into eighteen food groups according to nutritional characteristics and use in diet. We compared the mean percentage contribution to total daily energy intake of each food group according to three groups of household composition: adults living alone or with other adults (32·7 %), adults living with children (35·6 %) and adults living with adolescents (31·7 %).

Setting: Brazilian nationwide survey, 2008-2009.

Participants: Adults aged 20-59 years (n 6312; 52·1 % female).

Results: Women living alone or with other adults had higher consumption of vegetables, milk and other drinks, and lower consumption of beans and rice, compared with those living with children or adolescents. Men living alone or with other adults had higher consumption of sweets & desserts and vegetables, and lower consumption of beans, compared with those living with children or adolescents. According to household income, adults in the highest tertile who lived with children or adolescents presented a mixed consumption of healthy and unhealthy foods, whereas their counterparts in the first income tertile presented a marked consumption of foods considered traditional of the Brazilian population.

Conclusions: There are differences in food consumption based on the presence of children and adolescents in the household, with greater variation according to gender and household income.