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Effect of Antenatal Nutrition Education on Dietary Diversity among Pregnant Women in Nigeria

Abstract

Adequate maternal nutrition is essential for maintaining the health and wellbeing of pregnant women and supporting normal fetal growth and development. Pregnancy increases nutritional requirements, making adequate intake of diverse and nutrient-rich foods particularly important. Dietary diversity refers to the consumption of foods from a variety of food groups over a specified period and is an important component of adequate dietary intake during pregnancy. Antenatal nutrition education provides pregnant women with information about increased nutritional requirements during pregnancy, balanced diets, food-group diversity, appropriate meal planning, locally available nutrient-rich foods, food safety, micronutrient-rich foods, appropriate weight management, and dietary practices that support maternal and fetal health. In Nigeria, inadequate dietary diversity among pregnant women may be associated with limited nutrition knowledge, poverty, food insecurity, cultural food restrictions, food preferences, seasonal availability of foods, and inadequate access to appropriate nutrition counselling during antenatal care. Effective antenatal nutrition education may improve pregnant women's understanding of appropriate dietary practices and encourage greater consumption of foods from diverse food groups. Against this background, this study investigates the effect of antenatal nutrition education on dietary diversity among pregnant women in Nigeria. The study is anchored on the Health Belief Model, Social Cognitive Theory, and the Knowledge-Attitude-Practice framework. The Health Belief Model provides a framework for understanding pregnant women's adoption of healthy dietary practices through perceived benefits of adequate nutrition, perceived susceptibility to nutrition-related complications, perceived severity of poor maternal nutrition, perceived barriers, and cues to action. Social Cognitive Theory emphasizes the interaction between nutrition knowledge, self-efficacy, social influences, observational learning, household food environments, and dietary behaviour. The Knowledge-Attitude-Practice framework provides a basis for examining how antenatal nutrition education may improve pregnant women's knowledge and attitudes and translate these improvements into appropriate dietary practices. Collectively, these theoretical perspectives provide a suitable framework for explaining how antenatal nutrition education may influence dietary diversity among pregnant women in Nigeria. The study will adopt a quantitative quasi-experimental research design. Primary data will be collected from pregnant women attending selected antenatal care clinics in Nigeria using a structured interviewer-administered questionnaire, nutrition knowledge assessment, and dietary diversity assessment tool. A multistage sampling technique will be employed to select states, local government areas, healthcare facilities, antenatal clinics, and eligible pregnant women. Where feasible, selected antenatal clinics or participant groups will be assigned to intervention and comparison groups. Pregnant women in the intervention group will receive structured antenatal nutrition education through individual counselling, group education sessions, demonstrations, visual materials, and practical meal-planning activities. The education will cover maternal nutritional requirements, balanced diets, food-group diversity, consumption of locally available nutrient-rich foods, protein-rich foods, fruits and vegetables, healthy fats, micronutrient-rich foods, appropriate meal frequency, food safety, and dietary practices during pregnancy. Dietary diversity will be assessed using an appropriate validated dietary diversity assessment based on consumption across relevant food groups during the specified recall period. Additional indicators may include frequency and variety of food-group consumption, consumption of nutrient-rich foods, and adequacy of dietary diversity according to the selected assessment framework. Descriptive statistics will be used to summarize participants' sociodemographic characteristics, obstetric characteristics, household food conditions, previous exposure to nutrition education, nutrition knowledge, and dietary diversity scores. Inferential statistical techniques, including chi-square tests, paired-sample tests, independent-sample tests, and multiple regression analysis, will be used to determine the effect of antenatal nutrition education on dietary diversity. Where appropriate, dietary diversity before and after the intervention will be compared. Diagnostic tests will also be conducted to assess the reliability of the research instruments, model assumptions, goodness of fit, and robustness of the findings. The study is expected to find that antenatal nutrition education has a significant positive effect on dietary diversity among pregnant women in Nigeria. Pregnant women exposed to structured nutrition education are expected to demonstrate improved knowledge of maternal nutritional requirements and greater consumption of foods from a wider range of food groups. Education is expected to encourage increased consumption of nutrient-dense foods, fruits and vegetables, legumes, animal-source foods where available and acceptable, and other locally accessible nutritious foods. Practical education involving locally available foods and culturally appropriate meal-planning strategies is expected to be particularly effective in helping pregnant women translate nutrition knowledge into dietary practices. However, education alone may not guarantee adequate dietary diversity because pregnant women may continue to experience barriers such as household food insecurity, limited income, high food prices, seasonal food shortages, cultural food restrictions, and limited access to diverse nutritious foods. Consequently, antenatal nutrition education may be most effective when supported by nutrition-sensitive interventions, affordable access to diverse foods, appropriate antenatal nutrition services, micronutrient supplementation programmes, and household and community support. The study is expected to contribute to the literature on antenatal nutrition education, maternal nutrition, dietary diversity, pregnancy nutrition, antenatal care, health education, maternal health, and public health in Nigeria by providing empirical evidence on the effect of nutrition education on dietary diversity among pregnant women. The findings will provide useful information to the Federal Ministry of Health and Social Welfare, state ministries of health, primary healthcare development agencies, hospitals, antenatal care providers, nutrition programmes, public health practitioners, nutritionists and dietitians, community health workers, health educators, development partners, and policymakers regarding strategies for improving maternal dietary practices. The study will also provide evidence-based recommendations for strengthening nutrition counselling within antenatal care, promoting culturally appropriate dietary education, improving access to affordable nutritious foods, integrating nutrition-sensitive interventions into maternal health programmes, and promoting adequate dietary diversity among pregnant women in Nigeria.

Keywords: Antenatal nutrition education, dietary diversity, pregnant women, Nigeria, maternal nutrition, pregnancy nutrition, antenatal care, nutrition education, maternal health, food-group diversity, dietary practices, health education, nutrition counselling, public health.