We know that a diet high in fast foods tend to put weight on children and teens, but did you know that fast food consumption is also tied to an increased risk of certain health conditions?
A study coming out of New Zealand found that:
- Children and teens eating fast foods a number of times each week are at an increased risk for severe asthma, rhino-conjunctivitis, and eczema.
- Fruit eaten three or more times a week provide children and teens with a protective effect against severe asthma.
According to Philippa Ellwood, DDN, DPH, of the University of Auckland in New Zealand, and her colleagues, eating fast foods three or more times a week is associated with a 39% increased risk of severe asthma and a 70% increased risk of severe eczema among teens.In addition, children who eat fast foods with the same frequency have an increased risk of rhino-conjunctivitis and severe eczema.
The study article, published in journal Thorax, went on to report that reducing consumption of fast foods to two times a week, or less, reduced the incidence of wheezing and severe asthma in children. Ellwood and colleagues also found that eating fruit three or more times a week, among children and teens, offered a protective effect against severe asthma.
The authors stated, “If the associations found in this study are causal, the findings have major public health significance owing to the rising consumption of fast foods globally,”
The authors noted that earlier research had found diets with high intake of cereal, rice, and nut and cereal protein showed decreased prevalence of the allergic conditions and a protective effect against the conditions with elevated fruit consumption. Similarly, other research has shown a harmful effect of linolenic acid and trans fatty acid consumption.
The researchers gathered symptom prevalence data on types of food intake and symptom prevalence of asthma, rhino-conjunctivitis, wheezing, and eczema from 319,196 teens, ages 13 and 14, from 51 countries, and 181,631 children, ages 6 and 7, from 31 countries through the third phase of the International Study of Asthma and Allergies in Childhood (ISAAC). The latter is a multi-center, multi-country, multiphase cross-sectional study.
Teen participants, or parents of young children, were administered questionnaires that looked at symptoms and symptom frequency over the 12 months prior to the study. Questions about food intake looked at types of foods and whether foods were eaten once, twice, or three or more times weekly.
Milk consumption was inversely associated with current wheeze at once or twice weekly, severe asthma three or more times weekly, and severe rhino-conjunctivitis and severe eczema once or twice a week in teens.
Consumptions of eggs, fruit, meat, and milk three or more times a week protected against “all three conditions, current or severe” among children.
“The positive associations with severe disease suggest that fast foods are a predictor of disease severity rather than disease occurrence, although it is difficult to separate out the two in this study,” researchers concluded.
Study researchers also shared that the protective association between fruit and vegetables and the three conditions need to be further explored at country and regional levels.
The researchers found the study was limited by a number of factors, including self-report biases or classification errors, socioeconomic status’ effect on food consumption, and missing temporal data on disease outcome relative to diet.
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