From planetary health diet (PHD) to mental health: Higher PHD index protects against depression among the U.S. population

IF 3.7 2区医学 Q1 PSYCHIATRY Journal of psychiatric research Pub Date : 2025-02-05 DOI:10.1016/j.jpsychires.2025.02.006

Cheng Jiang , Seok Choi , Hongyang Gong

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Abstract

Background

Depression is a growing public health concern, and the modest efficacy of current treatments has led to efforts to identify modifiable risk factors. Many nutritional and dietary patterns are linked to depression. The Planetary Health Diet Index (PHDI) measures adherence to sustainable dietary guidelines by the EAT-Lancet Commission. However, the relationship between PHDI and depression has not been studied. This study evaluates this relationship using data from the National Health and Nutrition Examination Survey (NHANES) from 2007 to 2018.

Methods

Multivariate logistic regression and weighted quantile sum (WQS) regressions examined the relationship between PHDI, single nutrients, and depression. A generalized additive model with a smoothing plot analyzed the dose-response relationship.

Results

Among 30,446 participants, the highest quartile of PHDI was linked to a reduced risk of depression. WQS analyses showed consistent associations (OR = 0.71, 95%CI: 0.66, 0.76), with Vitamin C, Fiber, and Selenium significant factors. The dose-response curve indicated a linear association between PHDI and depression, with higher PHDI associated with lower depression risk.

Conclusions

The results of this study show a strong negative correlation between PHDI and depression.

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来源期刊

Journal of psychiatric research 医学-精神病学

CiteScore

7.30

自引率

2.10%

发文量

622

审稿时长

130 days

期刊介绍： Founded in 1961 to report on the latest work in psychiatry and cognate disciplines, the Journal of Psychiatric Research is dedicated to innovative and timely studies of four important areas of research: (1) clinical studies of all disciplines relating to psychiatric illness, as well as normal human behaviour, including biochemical, physiological, genetic, environmental, social, psychological and epidemiological factors; (2) basic studies pertaining to psychiatry in such fields as neuropsychopharmacology, neuroendocrinology, electrophysiology, genetics, experimental psychology and epidemiology; (3) the growing application of clinical laboratory techniques in psychiatry, including imagery and spectroscopy of the brain, molecular biology and computer sciences;