Background Vegetarian-type dietary patterns have been associated with reducing the risk of developing diabetes and may function as an effective strategy for diabetes management. Objectives We aimed to examine the associations between adherence to plant-based diet indices and the risk of developing diabetes in the Boston Puerto Rican Health Study. Methods Puerto Rican adults (n = 646), aged 45–75 y and free of diabetes at baseline, were included. Dietary intake was assessed via a validated FFQ. Three plant-based dietary indices were calculated: an overall plant-based diet index (PDI), a healthful plant-based diet index (hPDI), and an unhealthful plant-based diet index (uPDI). Incident diabetes was defined as fasting plasma glucose ≥ 126 mg/dL (7.0 mmol/L), glycated hemoglobin ≥ 6.5% (48 mmol/mol), or use of hypoglycemic agents during follow-up. Cox proportional hazards were used to evaluate associations between the dietary patterns and incidence of diabetes, adjusting for potential confounders, such as age, sex, socioeconomic status, lifestyle factors, obesity, total energy intake, depressive symptomatology, and plasma concentrations of lipids. Results During a mean of 4.2 y of follow-up, we identified 134 diabetes cases. After adjustment for covariates, higher hPDI was associated with lower risk of developing diabetes (adjusted HR for the highest compared with the lowest tertile: 0.54; 95% CI: 0.31, 0.94; P-trend = 0.03). In contrast, the PDI and uPDI were not significantly associated with the risk of diabetes (P-trend > 0.3 for both). Conclusions The healthful plant-based dietary index, but not the total plant-based dietary index, was inversely associated with diabetes risk. These findings suggest that the quality of plant-based diets must be considered when recommending plant-based diets for the prevention of diabetes. This trial was registered at clinicaltrials.gov as NCT01231958.
This study examined the associations between overall diet quality and the risk of dementia in a rural cohort among the oldest old. Included in this prospective cohort study were 2232 participants aged ≥ 80 years and dementia-free at the baseline according to the Geisinger Rural Aging Study (GRAS), a longitudinal cohort in rural Pennsylvania. In 2009, diet quality was assessed by a validated dietary screening tool (DST). Incident cases of dementia during 2009–2021 were identified using diagnosis codes. This approach was validated by a review of electronic health records. Associations between diet quality scores and the incidence of dementia were estimated using the Cox proportional hazards models, adjusted for potential confounders. Across a mean of 6.90 years of follow-up, we identified 408 incident cases of all-cause dementia. Having a higher diet quality was not significantly associated with a lower risk for incidents of all-cause dementia (adjusted HR for the highest compared with the lowest tertile: 1.01, 95% CI: 0.79, 1.29, P-trend = 0.95). Similarly, we did not observe a significant association between diet quality and altered risks of Alzheimer’s disease and other forms of dementia. Overall, having a higher diet quality was not significantly associated with a lower risk of dementia among the oldest old during the full follow-up.
Introduction: Sleep disruption (SD) and high sodium diets increase hypertension. We determined if SD increased sodium intake, preference for high sodium foods and if sex modified this effect when rats were fed a cafeteria-style diet (CAF-D). We hypothesized that SD would increase sodium intake and preference for savory foods independent of sex.Methods: Sprague-Dawley rats (n=8 male, n=20 female) were fed a CAF-D (rotating selection of 24 sweet and savory human foods + rodent chow ad libitum) and randomized to sleep undisturbed or SD due to environmental noise (8h/d, 16d). Calorie intake, weight gain and estrous cycle phase were determined daily.Results: In contrast to before treatment, undisturbed females gained significantly more weight than undisturbed males. Sleep disrupted males and females had similar weight gain. SD significantly increased calorie intake in males only. Independent of treatment or sex, rats preferred sweet relative to savory foods. Treatment didn't affect sodium intake but sleep disrupted males consumed significantly more sodium than females and ate more calories from savory foods than undisturbed males.Conclusions: Females are more sensitive to CAF-D than males. Despite that SD increased savory food intake in males, SD did not increase sodium consumption because these rats preferred sweet foods.
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