Vegetables Fruits Dietary fibre Primary prevention CVD Materias Investigacion::Ciencias de la Salud::Salud pública
Fecha de publicación:
Buil-Cosiales, P., Toledo, E., Salas-Salvado, J., Zazpe, I., Farras, M., Basterra-Gortari, FJ., et al. Association between dietary fibre intake and fruit, vegetable or whole-grain consumption and the risk of CVD: results from the PREvención con Dleta MEDiterránea (PREDIMED) trial. Br J Nutr. 2016 Aug; 116(3):534-546.
Prospective studies assessing the association between fibre intake or fibre-rich food consumption and the risk of CVD have often been limited
by baseline assessment of diet. Thus far, no study has used yearly repeated measurements of dietary changes during follow-up. Moreover,
previous studies included healthy and selected participants who did not represent subjects at high cardiovascular risk. We used yearly
repeated measurements of diet to investigate the association between fibre intake and CVD in a Mediterranean cohort of elderly adults at
high cardiovascular risk. We followed-up 7216 men (55–80 years) and women (60–80 years) initially free of CVD for up to 7 years in the
PREvención con DIeta MEDiterránea study (registered as ISRCTN35739639). A 137-item validated FFQ was repeated yearly to assess diet. The
primary end point, confirmed by a blinded ad hoc Event Adjudication Committee, was a composite of cardiovascular death, myocardial
infarction and stroke. Time-dependent Cox’s regression models were used to estimate the risk of CVD according to baseline dietary exposures
and to their yearly updated changes. We found a significant inverse association for fibre (Pfor trend =0·020) and fruits (Pfor trend=0·024) in
age-sex adjusted models, but the statistical significance was lost in fully adjusted models. However, we found a significant inverse association
with CVD incidence for the sum of fruit and vegetable consumption. Participants who consumed in total nine or more servings/d of fruits
plus vegetables had a hazard ratio 0·60 (95% CI 0·40, 0·96) of CVD in comparison with those consuming <5 servings/d.