(23-04-2018)The Inflammatory Potential of the Diet at Midlife Is Associated with Later Healthy Aging in French Adults.
Assmann KE1, Adjibade M1, Shivappa N2,3, Hébert JR2,3, Wirth MD2,3, Touvier M1, Akbaraly T4,5, Hercberg S1,6, Galan P1, Julia C1,6, Kesse-Guyot E1.
Abstract
BACKGROUND:
While low-grade chronic inflammation has been suggested as a major modulator of healthy aging (HA), no study has yet investigated the link between the inflammatory potential of the diet and multidimensional concepts of HA.
OBJECTIVE:
We aimed to evaluate the association between the inflammatory potential of the diet at midlife, as measured by the Dietary Inflammatory Index (DII), and HA assessed 13 y later.
METHODS:
We analyzed data from 2796 participants in the French Supplémentation en Vitamines et Minéraux Antioxydants (SU.VI.MAX) study aged 45-60 y at baseline (1994-1995) and initially free of diabetes, cardiovascular disease, and cancer. During the trial phase of the study (1994-2002), participants received either a placebo or a daily nutritional dose of antioxidant supplement (120 mg vitamin C, 6 mg β-carotene, 30 mg vitamin E, 100 μg Se, 20 mg Zn). HA was assessed in 2007-2009, and defined as having no major chronic disease, good physical and cognitive functioning, independence in daily activities, no depressive symptoms, good social health, good overall self-perceived health, and no function-limiting pain. The DII was calculated based on repeated baseline 24-h dietary records. Its association with HA was assessed by robust-error-variance Poisson regression, providing RR estimates.
RESULTS:
After adjustment for potential confounders, higher DII scores (reflecting a more proinflammatory diet), were associated with a decreased likelihood of HA: RRtertile 3/tertile 1 = 0.85 (95% CI: 0.74, 0.99); P-trend = 0.03. Secondary analyses revealed that this association was only significant among participants who had been in the placebo group during the trial phase: RRtertile 3/tertile 1 = 0.80 (95% CI: 0.64, 1.00); P-trend = 0.04.
CONCLUSIONS:
This study suggests that a proinflammatory diet may lower the probability of overall HA. The SU.VI.MAX trial was registered at www.clinicaltrials.gov as NCT00272428.
Source: J Nutr. 2018 Mar 1;148(3):437-444. doi: 10.1093/jn/nxx061.
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