Adherence to a mediterranean diet and its association with age-related macular degeneration. The Coimbra Eye Study-Report 4.

Auteur(s) :
Barreto P., Nunes S., Alves D., Raimundo M., da Luz Cachulo M., Farinha C., Laíns I., Rodrigues J., Almeida C., Ribeiro L., Figueira J., Santos L., Silva R.
Date :
Mar, 2018
Source(s) :
Nutrition (Burbank, Los Angeles County, Calif.). #51-52 p6-12
Adresse :
Association for Innovation and Biomedical Research on Light and Image, Coimbra, Portugal. Electronic address: Sandrina@aibili.pt.

Sommaire de l'article

OBJECTIVES
This study aimed to characterize the association of lifestyle and nutritional risk profiles with age-related macular degeneration (AMD) in two subpopulations with differing AMD prevalence.

METHODS
This case-control study (n = 1992) included 768 patients with AMD and 1224 age- and sex-matched participants without AMD with a single visit at a primary health care unit. Enrolled participants completed a validated lifestyle and food frequency questionnaire. A score to measure adherence to the Mediterranean diet (mediSCORE; Range, 0-9) was constructed from individual food intakes, which were further analyzed by conversion to nutrient consumption.

RESULTS
Higher adherence to the Mediterranean diet (mediSCORE ≥6) was significantly associated with no AMD (odds ratio [OR] = 0.73; P = 0.009). The subpopulation with lower AMD prevalence presented significantly higher adherence to the Mediterranean diet in relation to all individual food groups that comprised the mediSCORE (P < 0.014) with the exception of cereals. Food group analysis showed significant associations between the increased consumption of vegetables (OR = 0.63; P < 0.001) and fruit and nuts (OR = 0.78; P = 0.010) with no AMD. Nutrient analysis revealed that an increased ingestion of water, fibers, total fat, monounsaturated and polyunsaturated fatty acids, linoleic acid, vitamins A and C, carotene, alpha-tocopherol, folate, magnesium, iron, and zinc were significantly associated with no AMD (P < 0.0013). Finally, regular physical activity was associated with no AMD (P = 0.003).

CONCLUSIONS
High adherence to a Mediterranean diet and regular physical activity seem to be protective factors for AMD in a Portuguese population. The effect of the diet is likely driven by the increased consumption of vegetables, fruits, and nuts.

Source : Pubmed
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