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J Nutr Metab. 2013;2013:653185. doi: 10.1155/2013/653185. Epub 2013 Jun 11.

A single consumption of high amounts of the Brazil nuts improves lipid profile of healthy volunteers.

Author information

1
Department of Chemistry, Natural and Exact Sciences Centers, Federal University of Santa Maria (UFSM), 97105900 Santa Maria, RS, Brazil ; Department of Nutrition, Center Franciscan University (UNIFRA), Santa Maria, RS, Brazil.

Abstract

BACKGROUND:

This study investigates the effects of Brazil nut ingestion on serum lipid profile in healthy volunteers.

METHODS:

Ten healthy subjects were enrolled in the study. Each subject was tested 4 times in a randomized crossover in relation to the ingestion of different serving sizes of the Brazil nut: 0, 5, 20, or 50 g. At each treatment point, peripheral blood was drawn before and at 1, 3, 6, 9, 24, and 48 hours and 5 and 30 days. Blood samples were tested for total cholesterol, high- and low-density lipoprotein cholesterol (HDL-c and LDL-c, resp.), triglycerides, selenium, aspartate and alanine aminotransferases, albumin, total protein, alkaline phosphatase, gamma GT, urea, creatinine, and C-reactive protein.

RESULTS:

A significant increase of the plasma selenium levels was observed at 6 hours within the groups receiving the nuts. Serum LDL-c was significantly lower, whereas HDL-c was significantly higher 9 hours after the ingestion of 20 or 50 g of nuts. The biochemical parameters of liver and kidney function were not modified by ingestion of nuts.

CONCLUSIONS:

This study shows that the ingestion of a single serving of Brazil nut can acutely improve the serum lipid profile of healthy volunteers.

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