Journal
BRITISH JOURNAL OF NUTRITION
Volume 126, Issue 9, Pages 1389-1397Publisher
CAMBRIDGE UNIV PRESS
DOI: 10.1017/S000711452100012X
Keywords
Diet quality change; Body weight change; Multiethnic populations; Cohort studies; Dietary patterns
Categories
Funding
- National Cancer Institute at the National Institutes of Health [R03 CA223890, U01 CA164973, HHSN261201200423P, P30 CA071789]
- Support Program for Women in Science, Engineering, and Technology through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT and Future Planning [2019H1C3A1032224]
- Korea Foundation for Women In Science, Engineering & Technology (WISET) [WISET202103GI01] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [4299990914560] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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In this study, it was found that improving diet quality was associated with less weight gain over a 10-year period, with variations by race/ethnicity, age, and BMI. The inverse association was stronger in younger age and higher BMI groups, suggesting that maintaining a high-quality diet and improving diet quality over time may prevent excessive weight gain.
High-quality diets have been found to be beneficial in preventing long-term weight gain. However, concurrent changes in diet quality and body weight over time have rarely been reported. We examined the association between 10-year changes in diet quality and body weight in the Multiethnic Cohort Study. Analyses included 53 977 African Americans, Native Hawaiians, Japanese Americans, Latinos and Whites, who completed both baseline (1993-1996, 45-69 years) and 10-year follow-up (2003-2008) surveys including a FFQ and had no history of heart disease or cancer. Using multivariable regression, weight changes were regressed on changes in four diet quality indexes, Healthy Eating Index-2015, Alternative Healthy Eating Index-2010, alternate Mediterranean Diet and Dietary Approaches to Stop Hypertension scores. Mean weight change over 10 years was 1 center dot 2 (sd 6 center dot 8) kg in men and 1 center dot 5 (sd 7 center dot 2) kg in women. Compared with stable diet quality (< 0 center dot 5 sd change), the greatest increase (>= 1 sd increase) in the diet scores was associated with less weight gain (by 0 center dot 55-1 center dot 17 kg in men and 0 center dot 62-1 center dot 31 kg in women). Smaller weight gain with improvement in diet quality was found in most subgroups by race/ethnicity, baseline age and baseline BMI. The inverse association was stronger in younger age and higher BMI groups. Ten-year improvement in diet quality was associated with a smaller weight gain, which varied by race/ethnicity and baseline age and BMI. Our findings suggest that maintaining a high-quality diet and improving diet quality over time may prevent excessive weight gain.
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