[Nutrient intake of Chilean older people according to body mass index]. 
An adequate consumption of micro and macro nutrients is essential to maintain an adequate health among older people.  To compare the consumption of micro- and macronutrients in older people from three Chilean cities, according to their nutritional status.  Body mass index (BMI) was assessed and a food consumption tendency survey was applied to 976 non-disabled older people, living in the community.  Thinness was defined as a BMI < 23 kg/m².  Twenty percent of females and 17% of males had a BMI < 23 kg/m².  Participants with a higher BMI had a greater intake of micro- and macronutrients.  In females, micronutrient intake was adequate among those with higher BMI, although mean intake of calcium and vitamin B-12 were below recommendations.  In males, iron, zinc, calcium, magnesium, vitamin A, vitamin B6, vitamin B12 and pantothenic acid intake were below recommendation.  Thin older adults, regardless of sex, had a lower intake of calories and micro- and macronutrients.  Additionally, an overall low consumption of zinc, calcium, magnesium and vitamin B12 was detected.