Alzheimer's disease corresponds to 50-70% of all dementia syndromes, classified as a progressive neurodegenerative disease showing diffuse cortical atrophy with three stages of evolution: mild, moderate, and severe. Behavioral symptoms and memory loss are major manifestations of the disease. Non-pharmacological interventions are essential to improve the quality of life of these patients. Interdisciplinary assistance is essential throughout the disease course. Regarding nutrition for patients with Alzheimer's disease, weight loss and behavioral changes related to food are major objects of scientific study, as they trigger deterioration of the quality of life of patients and caregivers. Knowing which nutritional guidelines should be used helps in clinical decisions. The study of nutrition in dementia is, therefore, critical for patient management.

Purpose: to verify the correlation of the ingested diet with the nutritional status of Alzheimer disease (AD) patients; observation of fiber and fluid consumption and intestinal function.Methods: Cross-sectional study with 77 patients of both genders and their caregivers who were referred to nutritional status care in the three phases (CDR) of the AD. All answered the food anamnesis where it was possible to establish the amount of calories, macronutrients and micronutrients. Anthropometric measurements of weight, height, BMI, AC, TSF and AMC were collected.For the continuous variables, a descriptive statistical analysis was performed and for the analytical statistic the Poisson regression was used.Results: Most of the patients were eutrophic. The studied macronutrients were found to be adequate, except for the protein intake that was higher in the mild phase. No group achieved fiber intake. It was not found significant correlations between fiber consumption and intestinal function. In relation to micronutrients, adequate consumption of iron, vitamins A and B12 were found. Vitamin C intake did not reach DRI in mild patients and zinc consumption was low for patients who belonged to the group with moderated patients. Conclusions:Although it does not reflect the nutritional reality of Brazilian patients with probable AD, this study provided important characteristics of the diet composition that already allow us to establish nutritional action strategies.

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