Consumption of fruit and its fiber content improves longevity for older adults at high risk for cardiovascular disease (CVD), according to a 2014 observational study conducted by Spanish researchers. Fiber, also known as roughage or bulk, is a kind of carbohydrate found in fruit, vegetables, legumes, and whole grain cereals that your body cannot break down during digestion. It helps keep the digestive tract functioning well by absorbing water and creating the bulk that enables intestines to push out waste products.
The 2014 Spanish study, published in the American Journal of Clinical Nutrition, was based on analysis of annual dietary data provided over an average of six years by more than 7,000 men and women aged 55 to 75; although all of the study participants were considered to be at high risk for CVD, all were free of the disease when the study began. The individuals with the highest intake of fruit and fiber had a significant association with lower risk of death during the trial period, and most notably in relation to death from cardiovascular causes.
Participants who had low fruit consumption before and through the study period had more than a two-and-a-half-fold higher risk of death compared with individuals who ate an adequate amount.
The most-frequently consumed fruits in the study were apples, pears, citrus fruits, and watermelon.
References:
- Buil-Cosiales P, et al. Fiber intake and all-cause mortality in the Prevención con Dieta Mediterránea (PREDIMED) study. Am J Clin Nutr. 2014; 100 (6): 1498-1507. Published online at http://ajcn.nutrition.org/content/100/6/1498.abstract?sid=3ccd67e0-a6be-4e69-a8c1-4ab9b3b251bc
- CDC. State Indicator Report on Fruits and Vegetables, 2013. Published online at http://www.cdc.gov/nutrition/downloads/national-action-guide2013.pdf
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