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World|opinion & analysis|July 19, 2023 / 02:11 PM
Rising obesity rates in developing countries linked to high cost and limited availability of healthy foods

AKIPRESS.COM - Steep price gaps between healthy and unhealthy foods, coupled with the unavailability of a variety of healthy foods, are driving rising obesity rates in both urban and rural areas of developing countries, according to a literature review released  by the International Fund for Agricultural Development (IFAD) as part of its IFAD Research Series.

“While price gaps between healthy and unhealthy foods exist in nations across the globe, that price gap is much wider in poorer countries. Also, high-income inequality within a country is associated with a higher prevalence of obesity,” said Joyce Njoro, IFAD lead technical specialist, nutrition.

“If we want to curb rising obesity rates in developing countries, we need big solutions that address how food systems work. It is alarming to note that three billion people globally cannot afford a healthy diet,” said Njoro.

“Preventing obesity in developing countries requires a comprehensive approach that addresses cultural norms, raises awareness of associated health risks, and promotes the production, availability and affordability of healthy foods.”

The research conducted by IFAD, in collaboration with Wageningen Centre for Development Innovation (WCDI), reviewed hundreds of peer-reviewed studies and examined data from five representative countries—Indonesia, Zambia, Egypt, Nigeria, and Bolivia—to better understand the drivers of rising obesity rates in developing countries and what types of interventions work to address this global public health challenge from a food system perspective.

Obesity rates across developing countries are now approaching levels found in high-income countries. The analysis found a number of drivers of obesity in developing countries, including:

Food Prices: The price gap between healthy foods (expensive) and unhealthy foods (inexpensive) is greater in developing countries than in rich developed countries. As a result, three billion people cannot afford a healthy diet. According to one of the studies reviewed (Headey 2019), it is 11.66 times more expensive to obtain a calorie from eggs in poor countries than it is to obtain a calorie from starchy staples, while in those same countries it is only 2.92 times more expensive to obtain a calorie from sugary snacks than from starchy staples. In rich countries, there is a much smaller gap: it is 2.6 times more expensive to obtain a calorie from eggs than it is to obtain a calorie from starchy staples and 1.43 times more expensive to obtain a calorie from sugary snacks than from starchy staples.

Diet: Sugar-sweetened beverage consumption is on the rise in developing countries (Nicole D. Ford et al. 2017; Malik and Hu 2022), and the global sales of total per capita volumes of packaged food – which are usually processed which in most cases increases the content of added or free sugars, saturated and trans-fat, salt and diet energy density, while decreasing protein, dietary fibre, and micronutrients – rose from 67.7kg per capita in 2005 to 76.9kg in 2017.

Culture: In some developing countries, fatness of a child is desirable as it is considered as a sign of health and wealth, and consumption of unhealthy foods may also carry a certain prestige. Culture also plays a role at the energy expenditure side of the equation in cultures where physical inactivity is associated with high social status.

Gender: Women are more likely to be overweight or obese than men in nearly all developing countries. In a review that focused on lower middle-income countries (Nicole D. Ford et al. 2017) proposed multiple reasons for this sex disparity in overweight and obesity prevalence. Reasons included: different physiological responses to early-life nutrition, different hormonal responses to energy expenditure, weight gain associated with pregnancies, lower physical activity levels, depression, economic circumstances over the lifespan, and differences in sociocultural factors – like ideal body size and acceptability of physical activity.

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