A high consumption of ultra-processed foods is associated with higher total mortality in an adult Mediterranean population

Abstract

Background & AimsThe consumption of ultra-processed foods (UPF) has been associated with higher all-cause and cardiovascular disease (CVD) mortality, although this association has not been sufficiently investigated in Mediterranean populations. We aimed to evaluate the association between UPF consumption and all-cause, CVD and cancer mortality in an adult population in Spain. MethodsWe analysed data from 1,538 participants aged 20 years and above in the Valencia Nutrition Survey in 1995. Diet was assessed at baseline using a validated food frequency questionnaire and the consumption of UPF was calculated using the NOVA system. Information on socio-demographic characteristics, lifestyles, and presence of diseases was also collected at baseline. Cause of death was ascertained during an 18-year follow-up period. We used Cox regression and competing risk models as proposed by Fine and Gray's to estimate adjusted hazard ratios (HR) and 95% confidence intervals (95%CI). ResultsAfter 18 years of follow-up, we documented 312 deaths (36.5% of CVD and 25.6% of cancer). Compared with participants in the lowest tertile of UPF consumption, those in the highest tertile showed 40% higher risk of all-cause mortality, HR 1.40 (95%CI: 1.04-1.90), and evidence of a higher CVD mortality, HR 1.39 (95%CI: 0.80-2.41) and of cancer mortality, HR 1.53 (95%CI: 0.83-2.82). ConclusionsThis study suggests that a high UPF consumption is associated with a higher all-cause mortality in a Mediterranean population after a long follow-up period. Considering the increase in UPF consumption and their detrimental health effects on mortality, these results should be confirmed by other studies in other populations.