Over the years, children in America have consistently consumed fewer than the recommended servings of fruit and vegetables [Centers for Disease Control (CDC), 1996a; Cullen et al., 2001; Domel et al., 1993b; Krebs-Smith et al., 1996; Subar et al., 1995]. Instead, they are consuming high fat, caloric-dense, nutrient-poor foods. As a result, the number of overweight children has increased to record numbers (Blumenthal et al., 2002; CDC, 1996a). The prevalence of Type II diabetes in children is also on the rise (St.-Onge et al., 2003).
The consumption of fruit and vegetables is vital to the health of children (Bazzano et al., 2002; Cullen et al., 2002; Djousse et al., 2004; Domel et al., 1993b; Kirby et al., 1995; Liu et al., 2000; Ness and Powles, 1997). Fruit and vegetable consumption decreases the risk for numerous diseases and health problems (Bazzano et al., 2002; Djousse et al., 2004; Liu et al., 2000). Including fruit and vegetables consistently in a diet can also assist with weight control (Lin and Morrison, 2002). This may be a result of fruit and vegetables being nutrient-dense and generally low in calories.
Low-income populations tend to consume even fewer fruit and vegetables and are at greater risk of being overweight and obese (Morton and Guthrie, 1999; Treiman et al., 1996; Wang, 2001). Often, fruit and vegetables are not available in the homes of low-income families because of areas of food deserts (areas without a proper grocery store) combined with the expense and perishable nature of fresh foods (Goodman, 2009; Treiman et al., 1996; Wang, 2001). Low-income families also report eating at fast food restaurants more frequently (Kirby et al., 1995). Research has reported many low-income families suffer from food insecurity, which is associated with a reduced variety and availability of fruit and vegetables at home (Dave et al., 2010; Kaiser et al., 2003; Matheson et al., 2002).
Additionally, research has suggested demographics influence risk levels for obesity and Type II diabetes. In the United States, the prevalence of overweight people and obesity is greatest among the low-income groups (Morton and Guthrie, 1999; Wang, 2001). Cullen et al. (2002) found Hispanic children on average consumed fewer fruit and vegetables per day compared with non-Hispanic white children. Male Hispanics and the youngest and oldest age groups among Hispanics have reported the lowest intakes of fruit and vegetable servings per week (Subar et al., 1995). Furthermore, Hispanics are more likely to have a high body mass index compared with non-Hispanic whites (American Heart Association, 2011; Wang, 2001). Hispanic parents also report significantly fewer “meal planning practices” (such as making a menu before shopping) than non-Hispanic white parents (Cullen et al., 2002).
Early childhood is a critical period for developing obesity (Law, 2001). The number of overweight children aged 6 to 17 has increased by almost 200% in the last 30 years and those numbers continue to rise in America (Blumenthal et al., 2002; CDC, 1996b; Jolliffe, 2004; Law, 2001; St.-Onge et al., 2003; Wang, 2001; Weisberg, 2002). About 30% of children aged 6 to 19 years old are overweight (St.-Onge et al., 2003; Wang, 2001). According to the 2005–2008 National Health and Nutrition Examination Survey, only 31% of adult Americans are at a healthy weight, indicating many children are at risk for becoming overweight as adults [National Center for Health Statistics (NCHS), 2011]. Overweight individuals and the incidence of obesity has increased so rapidly both worldwide and within the United States that physicians are now calling it an epidemic and believe that it will soon pass smoking as the leading cause of preventable death within the United States (Blumenthal et al., 2002; Hesketh and Campbell, 2010; Weisberg, 2002). Diseases that result from being overweight or obese are believed to be responsible for ≈300,000 deaths per year in the United States and have been estimated to cost in excess of $200 billion annually for medical expenses and lost productivity (CDC, 1996b; NCHS, 2011; Weisberg, 2002).
Food preferences and dietary habits are established during childhood (Carter, 2002; Kirby et al., 1995). Therefore, interventions need to be targeted toward young children while they are forming their lifelong habits. Preference for and positive attitudes about fruit and vegetables have been major predictors of fruit and vegetable consumption (Cullen et al., 2002; Domel et al., 1993b; Reniscow et al., 1997). Since many chronic diseases begin in childhood and carry over into adulthood and dietary preferences are learned while children are young, strategies should be aimed at younger children to improve their preferences and attitudes toward fruit and vegetables (Baranowski et al., 1997). Strategies aimed at younger children tend to have better long-term results than strategies focused on adolescents (Carter, 2002).
There are many ways teachers can teach nutrition. School-based nutrition education increases nutritional knowledge and can influence positive attitude change toward healthy eating in most grade levels (Contento et al., 1992). School gardens are a way to teach students using hands-on activities that are fun and teach skills at the same time. Gardening provides hands-on activities through the actual growing, harvesting, and preparation of vegetables. Gardening and related activities improve attitudes about, preferences for, and willingness to taste new fruit and vegetables (Lineberger and Zajicek, 2000; Morris et al., 2001).
The objective of the current study was to evaluate the impact of a health education through gardening program on children’s knowledge about nutrition and the attitudes they have toward fruit and vegetables.
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