During the lifespan, there are multiple factors influence the longevity including genotype, metabolism, physiology, sociodemographic and environmental factors, nutritional and lifestyle habits. Nutrition during the life time has an effect on the health status. Dietary indexes, certain dietary patterns and dietary guidelines have been used for analysing dietary pattern and life expectancy relationship in many studies. Dietary pattern has an important effect on longevity. The cohort study results indicate that diet quality and Medittarenean diet have potential effects on longevity. The important effects of nutrition on longevity related with quality, quantity, frequency, variety and emotional satisfaction. Therefore, nutritional strategies that provide clear benefits for ageing linked with both physiological and psychological functions to maintain life quality. The aspiration is not only to "live longer" but to "live better," and to maintain optimal qual¬ity of life during the later stages of life.
Volume -2 Issue -5can used as a predictor of short-term mortality [14,15]. Another longitudinal study with 3328 old men (60-79 years), Healthy Diet Indicator (based on WHO dietary guidelines) and the Elderly Dietary Index (based on a mediterranean dietary pattern) indicated that high diet quality is associated with all-cause mortality [16]. In addition, the longitudinal British Diet and Nutrition Survey with 972 participants (aged ≥65 years) measured the diet quality with three index and while the Healthy Diet Score was not a predictor of mortality, the Recommended Food Score and the Mediterranean Diet Score were related with all-cause mortality [17]. Also, the Breast Cancer Detection Demonstration Project, a prospective cohort study results showed that low diet quality is related with increased mortality risk [18]. In addition, American Cancer Society Cancer Prevention Study II Nutrition Cohort study results indicate that diet quality was related with all cause and all circulatory disease mortality rates [15]. According to results of First National Health and Nutrition Examination Survey (NHANNES)-I low dietary diversity significantly correlates with high mortality risk of both men and women [19]. Another prospective study in Sweden conducted with women, demonstrated that cancer mortality of women who consume high consumption of red meats, refined carbohydrates, sugars, foods involve high saturated and trans fat is higher than women who consume that foods low amount [20]. According to the 16-year follow-up Whitehall II cohort study results, to be avoide from fried and sweet food, processed and red meat, refined grains, and high-fat dairy products is associated with a higher odds of disease-free and highly functional elderly [21]. Also, the prospective study in Europe with 452,717 participants indicated that increased fiber is associated with lower total mortality rate, and as a fiber source cereals-vegetables have effects more than fruits [22].
Mediterranean DietThe characteristics of Mediterranean diet is a h...