Chapter 2 Frailty concepts

Nutrition Management in Older Adults with Diabetes: A Review on the Importance of Shifting Prevention Strategies from Metabolic Syndrome to Frailty

The increasing prevalence of older adults with diabetes has become a major social burden. Diabetes, frailty, and cognitive dysfunction are closely related to the mechanisms of aging. Insulin resistance, arteriosclerosis, chronic inflammation, oxidative stress, and mitochondrial dysfunction may be common mechanisms shared by frailty and cognitive impairment. Hyperglycemia, hypoglycemia, obesity, vascular factors, physical inactivity, and malnutrition are important risk factors for cognitive impairment and frailty in older adults with diabetes. The impact of nutrients on health outcomes varies with age; thus, shifting diet therapy strategies from the treatment of obesity/metabolic syndrome to frailty prevention may be necessary in patients with diabetes who are over 75 years of age, have frailty or sarcopenia, and experience malnutrition. For the prevention of frailty, optimal energy intake, sufficient protein and vitamin intake, and healthy dietary patterns should be recommended. The treatment of diabetes after middle age should include the awareness of proper glycemic control aimed at extending healthy life expectancy with proper nutrition, exercise, and social connectivity. Nutritional therapy in combination with exercise, optimal glycemic and metabolic control, and social participation/support for frailty prevention can extend healthy life expectancy and maintain quality of life in older adults with diabetes mellitus.

Friendship-related social isolation is a potential risk factor for the transition from robust to prefrailty among healthy older adults: a 1-year follow-up study

PURPOSE

Social factors are often overlooked when considering physical frailty. The purpose of this study was to determine whether social isolation is associated with new onset of physical frailty among healthy Japanese older adults.

METHODS

This was a 1-year prospective cohort study conducted in Japan from August 2014 to August 2015. The participants were 229 Japanese older people (106 men, 123 women, mean age = 69.3 ± 4.2 years) who did not have prefrailty or frailty at baseline and who were current students or graduates of a community college for older people in Japan. Social isolation was assessed using the Lubben Social Network Scale-6 in terms of overall social isolation, family-related social isolation, and friendship-related social isolation. Frailty was categorized using the Fried frailty criteria. The association between new onset of physical frailty and baseline characteristics, including social isolation, was investigated.

RESULTS

At 1-year follow-up, 180 (78.6%) of the participants remained robust, while 49 (21.4%) were identified as prefrail; no participants were identified as frail. Prefrailty was only associated with friendship-related social isolation (odds ratio: 4.58, 95% confidence interval 2.11-9.92, P < 0.001) at baseline. No significant associations were observed for any other baseline characteristics, including overall social isolation, family-related social isolation, comorbidities, body composition, and physical function.

CONCLUSION

Older adults with friendship-related social isolation are four times more likely to develop prefrailty from robust during the 1-year follow-up. The results suggest that friendship-related social isolation increases the risk of healthy older adults transitioning from robust to prefrail.