You are currently viewing Globally, Diets Are Not Much Healthier Today Than They Were Thirty Years Ago – Neuroscience News

Globally, Diets Are Not Much Healthier Today Than They Were Thirty Years Ago – Neuroscience News

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Summary: While the incorporation of healthier legumes and fruits into diets improved over time, dietary quality was offset by the consumption of unhealthy components, such as processed meats and sugar-sweetened drinks.
Source: Tufts University
On a scale from 0 to 100 of how well people stick to recommended diets, with 0 being a poor diet (think heavy consumption of sugar and processed meats), and 100 representing the recommended balance of fruits, vegetables, legumes/nuts and whole grains, most countries would earn a score around 40.3.
Globally, this represents a small, but meaningful, 1.5-point gain between 1990 and 2018, researchers from the Friedman School of Nutrition Science and Policy at Tufts University report today in the journal Nature Food.
The study, one of the most comprehensive estimates yet of global dietary quality—and the first to include findings among children as well as adults—highlights the challenges worldwide to encourage healthy eating.
Although global gains were modest, there was notable variation by country, with nutritious options becoming more popular in the United States, Vietnam, China, and Iran, and less so in Tanzania, Nigeria, and Japan.
“Intake of legumes/nuts and non-starchy vegetables increased over time, but overall improvements in dietary quality were offset by increased intake of unhealthy components such as red/processed meat, sugar-sweetened beverages, and sodium,” says lead author Victoria Miller, a visiting scientist from McMaster University in Canada who started this study as a postdoctoral scholar with Dariush Mozaffarian, Dean for Policy and Jean Mayer Professor of Nutrition at the Friedman School, and senior author on the paper.
Dietary quality in detail
Poor diet is a leading cause of illness, responsible for 26% of preventable death worldwide. While interventions and policies to support healthy eating are urgently needed, little has been known about differences in dietary quality by demographics such as age, sex, education, or proximity to urban areas—helpful information to target public health campaigns.
Miller and colleagues addressed this gap by measuring global, regional, and national eating patterns among adults and children across 185 countries based on data from over 1,100 surveys from the Global Dietary Database, a large, collaborative compilation of data on food and nutrient consumption levels worldwide. The researchers’ primary outcome was the 0 to 100 scale known as the Alternative Healthy Eating Index, a validated measure of diet quality.
Regionally, averages ranged from as low as 30.3 in Latin America and the Caribbean to as high as 45.7 in South Asia. The average score of all 185 countries included in the study was 40.3. Only 10 countries, representing less than 1 percent of the world’s population, had scores over 50. The world’s highest scoring countries were Vietnam, Iran, Indonesia and India, and the lowest scoring were Brazil, Mexico, the United States and Egypt.
Globally, among adults, women were more likely to eat recommended diets than men, and older adults more so than younger adults.
“Healthy eating was also influenced by socioeconomic factors, including education level and urbanicity,” says Miller. “Globally and in most regions, more educated adults and children with more educated parents generally had higher overall dietary quality.”
“On average across the world, dietary quality was also greater among younger children but then worsened as children aged,” she adds. “This suggests that early childhood is an important time for intervention strategies to encourage the development of healthy food preferences.”
The researchers note some study imitations to consider include measurement errors in the dietary data, incomplete survey availability in some countries, and a lack of information on some important dietary considerations, such as trans-fats intake. But the findings offer key benchmarks for comparison as new information is added to the Global Dietary Database.
Turning data into policy
The researchers say that the scale and detail of the Nature Food study enables nutrition researchers, health agencies, and policymakers to better understand trends in dietary intake that can be used to set targets and invest in actions that encourage healthy eating, such as promoting meals made up of produce, seafood, and plant oils.
“We found that both too few healthy foods and too many unhealthy foods were contributing to global challenges in achieving recommended dietary quality,” says Mozaffarian.
“This suggests that policies that incentivize and reward more healthy foods, such as in healthcare, employer wellness programs, government nutrition programs, and agricultural policies, may have a substantial impact on improving nutrition in the United States and around the world.”
The research team next plans to look at estimating how different aspects of poor diets directly contribute to major disease conditions around the world, as well as modeling the effects of various policies and programs to improve diets globally, regionally, and nationally.
Author: Press Office
Source: Tufts University
Contact: Press Office – Tufts University
Image: The image is in the public domain
Original Research: Open access.
Global dietary quality in 185 countries from 1990 to 2018 show wide differences by nation, age, education, and urbanicity” by Victoria Miller et al. Nature Food
Abstract
Global dietary quality in 185 countries from 1990 to 2018 show wide differences by nation, age, education, and urbanicity
Evidence on what people eat globally is limited in scope and rigour, especially as it relates to children and adolescents. This impairs target setting and investment in evidence-based actions to support healthy sustainable diets.
Here we quantified global, regional and national dietary patterns among children and adults, by age group, sex, education and urbanicity, across 185 countries between 1990 and 2018, on the basis of data from the Global Dietary Database project.
Our primary measure was the Alternative Healthy Eating Index, a validated score of diet quality; Dietary Approaches to Stop Hypertension and Mediterranean Diet Score patterns were secondarily assessed.
Dietary quality is generally modest worldwide. In 2018, the mean global Alternative Healthy Eating Index score was 40.3, ranging from 0 (least healthy) to 100 (most healthy), with regional means ranging from 30.3 in Latin America and the Caribbean to 45.7 in South Asia. Scores among children versus adults were generally similar across regions, except in Central/Eastern Europe and Central Asia, high-income countries, and the Middle East and Northern Africa, where children had lower diet quality.
Globally, diet quality scores were higher among women versus men, and more versus less educated individuals.
Diet quality increased modestly between 1990 and 2018 globally and in all world regions except in South Asia and Sub-Saharan Africa, where it did not improve.
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