Norma L Dawkins

Dietary Consumption Practices and Cancer Risk in African Americans in the Rural South

This study describes the dietary consumption practices of a sample of African Americans in the rural South. A qualitative research design involving a cross-sectional food diary was utilized. Complete datasets were collected from 114 participants, 66% female, between the ages of 19 and 79 years. The consumption of a variety of fruits, non-starchy vegetables and unprocessed cereals in daily meals was low in this sample. Frequent consumption of fried foods; fast foods; sugary, carbonated beverages; processed, high-fat and high-sodium foods; and low fruit and non-starchy vegetable intake were evident. The findings are crucial to the development for culturally-specific nutrition education intervention programs for African Americans in the rural South targeted at the modification of not only diet, but food preparation methods to reduce cancer risk.

The impact of high fat diets on physiological changes in euthyroid and thyroid altered rats

The association of adverse health with high fat intake has long been recognized. However, the lack of research focusing on the interrelationship of thyroid and liver function, and the pathogenesis of a high fat diet leaves these topics poorly understood. The objective of this study was to evaluate and compare the physiological changes in euthyroid and thyroid altered animal model fed saturated and unsaturated high fat diets. To achieve this objective adult male Sprague Dawley rats (n = 100) were fed one of five diets; a control or one of four test diets containing 25% saturated or unsaturated, and 37% saturated or unsaturated fats for a period of eight weeks. Each experimental group consisted of ten euthyroid and ten thyroid altered animals. An altered thyroid state was chemically induced with the addition of 0.05% propylthiouracil (PTU) in the drinking water. Euthyroid animals fed high fat diets increased in body weights and body lengths, compared to thyroid altered animals (P < 0.05). Alanine aminotransferase (ALT) and asparte aminotransferase (AST) levels increased across all experimental groups. HbA1C values and urinary glucose values were within normal range for all animals. Liver morphology showed increased hepatic stellate (ito) and vacuole cells in thyroid altered animals. These findings suggest that altered thyroid status negatively impacts growth and weight gain, and simultaneously affected lipid metabolism, resulting in abnormal liver morphology.

Diets containing traditional and novel green leafy vegetables improve liver fatty acid profiles of spontaneously hypertensive rats

BackgroundThe consumption of green leafy vegetables (GLVs) has been demonstrated to reduce the risks associated with cardiovascular and other diseases. However, no literature exists that examines the influence of traditional and novel GLVs on the liver fatty acid profile of an animal model genetically predisposed to developing hypertension. The aim of the present study was to examine the effects of diets containing 4% collard greens, purslane or sweet potato greens on the liver fatty acid profiles of four-week old male spontaneously hypertensive rats (SHRs, N = 44). Following four weeks consumption of the diets, liver fatty acid profiles were determined by gas–liquid chromatography of transesterified fatty acid methyl esters.ResultsSHRs consuming the control diet had greater percentages of liver saturated fatty acid and less omega-3 fatty acid percentages. SHRs consuming the diets containing vegetables had significantly greater liver concentrations of γ- linolenic, docosahexaenoic and docosahexaenoic acids, as well as lower levels of lauric, palmitic and arachidonic acids. SHRs consuming the control diet had significantly greater percentages (p < 0.05) of oleic; significantly less γ-linolenic and docosahexaenoic acids.ConclusionsThis study demonstrates the ability of GLVs to modulate liver fatty acid composition, thus providing protection against elevations in atherogenic fatty acids, which may be involved in CVD pathogenesis. Consequently, dietary recommendations for the prevention of CVD should consider the possible cardioprotective benefits and the subsequent alterations in fatty acid profiles afforded by diets containing collard greens, purslane and sweet potato greens.

Weight and blood pressure reduction among participants engaged in a cancer awareness and prevention program.

Objectives African–Americans consume a diet high in fat, salt and sugar; such dietary habits increase the risks of cancer and other chronic diseases. The objective of this study was to engage rural communities in a nutrition and physical activity behavior modification program to promote cancer awareness and risk reduction. Methods Focus group discussions were conducted to generate information for the development of a nutrition and physical activity program. African Americans (N = 62) from two rural counties (Bullock and Macon) in Alabama participated in a year-long intervention program in 2012 and 2013. Weight loss and blood pressure were evaluated to measure the impact of the intervention. Results Themes emerged for the focus group discussions were: nutrition, health, family, environment, and resource access. In Macon County participants lost weight irrespective of the exercise regimen, with those involved in floor exercise losing the most weight (− 22.4 lbs, or − 11.18% change), while in Bullock county walking was most effective in weight loss (6.1 lbs or − 3.40% change) p < 0.05. Systolic and diastolic pressure decreased from 5.3 to 10.5 mm Hg; − 2.0 to − 6.4 mm Hg, respectively, for Bullock county, except for the walking group. In Macon County, both systolic and diastolic pressure % change ranged from − 8.94 to 12.66 and − 5.34 to 12.66 mm Hg respectively, irrespective of physical activity respectively. Conclusion In this study, changes in weight lost and blood pressure were observed among individuals engaged in a nutrition education and physical activity program.

Healthy Lifestyle: A Community-Based Cancer Awareness and Prevention Intervention Program

Healthy Lifestyle engages the community in the development of a health behavior modification program to reduce cancer risk among African Americans. The objectives are 1) to assess knowledge, attitudes, and behaviors that affect cancer risk through focus group discussions; and 2) to identify community members to implement programs and practices that facilitate healthy behavior routines. Thirty-four African American focus group participants completed surveys regarding health knowledge and behavioral practices. Results from the focus groups identified three themes: 1) Health and Nutrition; 2) Environment; and 3) Family. The majority of focus group participants (94%) indicated that annual physical exams were important. However, of that group, 47% had not had a physical within the last 12 months and only 44% had scheduled appointments. Of the 79% who indicated they could commit to a two-year study, only 64% felt they could be leaders.

Earthquake Disaster Resilience: A Framework for Sustainable Gardening in Haiti’s Vulnerable Population.

ABSTRACT Food shortages following earthquake disasters lead to chronic food insecurity, malnutrition, illness, and an escalation in deaths. For Haiti, an island nation with limited resources, including food, resilience is more difficult without a framework to guide recovery. A model that proposes the use of partnership development and gardening interventions to achieve sustainable food relief is described. The approach involves assessment of needs, nutrition education and training, community and home gardens, partnerships, entrepreneurship, policy development, marketing, and the involvement of stakeholders in local and international communities. Application of the model may greatly enhance sustainable food supply for the most vulnerable populations in Haiti.

Strategies for Cardiovascular Disease Prevention in Rural Southern African American Communities

Cardiovascular disease (CVD) is a commonly recognized umbrella term encompassing conditions, disease or disorders of the heart and/or blood vessels that may result in impairment of optimal cardiovascular functioning. CVD is the leading cause of morbidity and mortality in the United States, as well as in both developed and developing nations. Although the risk for CVD in the United States may vary according to and fluctuate within certain demographic, educational, behavioral and socio-economic characteristics, disparities in CVD prevention and treatment continue to ensue, particularly within minority populations. This gap in CVD disparity is further increased in regard to African American women living in rural southern communities. Demographic, socioeconomic and neighborhood characteristics are suggested to converge within rural African American communities to additively influence CVD risk.