Effect of a dietary intervention based on the Mediterranean diet on the quality of life of patients recovered from depression: Analysis of the PREDIDEP randomized trial
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Date
2023-05Author
Cabrera Suárez, Beatriz
Lahortiga Ramos, Francisca
Sayón Orea, María del Carmen
Hernández Fleta, José Luis
Molero, Patricio
Vega Pérez, Rosario
Sánchez Villegas, Almudena
Cabrera, Claudio
Plá Vidal, Jorge
Chiclana Actis, Carlos
Vega Pérez, Patricia
Navarro, S.
Ortuño, Felipe
Florido, Mónica
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Experimental Gerontology 175 : (2023) // Article ID 112149
Abstract
INTRODUCTION: There is substantial evidence supporting that improving diet quality leads to improved health-related quality of life (HRQoL). Our major aim was to assess the effectiveness of a Mediterranean diet-based nutritional intervention to improve HRQoL in the context of a secondary prevention trial of depression. Secondarily to assess its effectiveness among adults aged 60 or more years.
METHODS: The PREDIDEP study is a 2-year multicentre, randomized, single-blinded nutritional trial. At baseline and at 1-year and 2-year follow-up, SF-36 health survey questionnaire was collected to evaluate participants' HRQoL (total and specific range for each of the 8 dimensions: 0 to 100 points). Mixed effect linear models were used to assess changes in HRQoL according to adherence to the Mediterranean diet. The trial was registered at ClinicalTrials.govNCT03081065.
RESULTS: After 2years of intervention, the Mediterranean Diet intervention group compared to control group (without nutritional intervention, only usual clinical care) showed an improvement in some dimensions of HRQoL such as Mental Health (7.22; 95% CI=2.22-12.22) (between-group difference: 6.79; 95% CI -0.14-13.73, p=0.055); Vitality (9.51; 95% CI=4.00-15.03) (between-group difference: 9.00; 95% CI 1.75-16.25, p=0.020); Mental Summary Component (2.83; 95% CI=0.55-5.11) (between-group difference: 1.17; 95% CI=-1.96-4.30, p=0.462); and General Health (10.70; 95% CI=5.58-15.81) (between-group difference: 6.20; 95% CI=-0.89-13.28, p=0.086). Similar results were observed for participants aged 60 or more years.
CONCLUSION: The intervention based on Mediterranean diet in patients with previous depression seems to be effective in improving HRQoL, especially the mental dimensions. This effect is also observed among participants aged 60 or more years.