Effects of Parental Nativity and Length of Stay in the US on Fruit and Vegetable Intake Among WIC-Enrolled Preschool-Aged Children

Fruit and Vegetable Purchases and Consumption among WIC Participants after the 2009 WIC Food Package Revision: A Systematic Review

To promote fruit and vegetable (FV) intake among participants, the USDA Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) implemented a comprehensive food package revision in 2009. However, to our knowledge, no studies have systematically explored the factors related to FV purchases and/or consumption among WIC participants in the post-2009 revision era. To fill this knowledge gap, we conducted a systematic literature review using PubMed, Cumulative Index to Nursing and Allied Health Literature (CINAHL), Cochrane Central Register of Controlled Trials, and Web of Science using key search terms. Studies published from January 1, 2007, through February 28, 2019, were included, since an interim rule for the WIC food package revision was issued in 2007. This review followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses format. The articles were grouped based on main themes or factors, settings, design, study years, and sample size. Thirty-nine articles met the inclusion criteria. Seven main themes or factors related to FV purchases and/or consumption in WIC participants were identified in these articles. The 2009 WIC food package revision was the most-studied factor (n = 9). National and state-level studies showed a consistently positive relation between the 2009 revision and FV purchases and/or consumption. However, some studies did not find a positive relation. State-level policy variations can be exploited as natural experiments to assess the causality of state-level factors in WIC participants' FV purchases or consumption. The majority of the included studies were limited in being local (n = 26, 66.7%), cross-sectional (n = 29, 74.4%), or having sample sizes <1000 (n = 25, 64.1%), which could explain the diverse results regarding the relation between FV purchases and/or consumption and various factors, including individual, store, and program characteristics.

Healthy eating patterns associated with acculturation, sex and BMI among Mexican Americans

OBJECTIVE

Examine relationships of healthy and unhealthy dietary patterns with BMI, sex, age and acculturation among Mexican Americans.

DESIGN

Cross-sectional. Participants completed culturally tailored Healthy and Unhealthy Eating Indices. Multivariable mixed-effect Poisson regression models compared food pattern index scores and dietary intake of specific foods by BMI, sex, age and acculturation defined by language preference and generational status.

SETTING

Participants recruited from the Cameron County Hispanic Cohort study, Texas-Mexico border region, between 2008 and 2011.

SUBJECTS

Mexican-American males and females aged 18-97 years (n 1250).

RESULTS

Participants were primarily female (55·3 %), overweight or obese (85·7 %), preferred Spanish language (68·0 %) and first-generation status (60·3 %). Among first-generation participants, bilingual participants were less likely to have a healthy eating pattern than preferred Spanish-speaking participants (rate ratio (RR)=0·79, P=0·0218). This association was also found in males (RR=0·81, P=0·0098). Preferred English-speaking females were less likely to consume healthy foods than preferred Spanish-speaking females (RR=0·84, P=0·0293). Among second-generation participants, preferred English-speaking participants were more likely to report a higher unhealthy eating pattern than preferred Spanish-speaking participants (RR=1·23, P=0·0114). Higher unhealthy eating patterns were also found in females who preferred English v. females who preferred Spanish (RR=1·23, P=0·0107) or were bilingual (RR=1·26, P=0·0159). Younger, male participants were more likely to have a higher unhealthy eating pattern. BMI and diabetes status were not significantly associated with healthy or unhealthy eating patterns.

CONCLUSIONS

Acculturation, age, sex and education are associated with healthy and unhealthy dietary patterns. Nutrition interventions for Mexican Americans should tailor approaches by these characteristics.

It is Hard to Swim Upstream: Dietary Acculturation Among Mexican-Origin Children

Health and immigration researchers often implicate dietary acculturation in explanations of Mexican children of immigrants' weight gain after moving to the U.S., but rarely explore how diet is shaped by immigrants' structural incorporation. We used data from the 1999/00-2009/10 National Health and Nutrition Examination Survey to assess how indicators of Mexican-origin children's acculturation and structural incorporation influence two outcomes: how healthy and how "Americanized" children's diets are. Indicators of acculturation were strongly associated with more Americanized and less healthy diets. However, structural incorporation indicators were mostly unrelated to diet outcomes net of acculturation. An exception was that parental education was positively associated with consuming a healthy diet. Finally, children of natives consumed more Americanized, unhealthy diets than children of immigrants and these differences were largely explained by differences in the acculturation. Children of natives would have consumed an even less healthy diet were it not for their higher levels of parental education. Overall, the results suggest that the process of adapting to the U.S. life style is associated with the loss of cultural culinary preferences and less healthy eating behaviors despite improvements in socioeconomic status.