Micronutrient quality of weight-loss diets that focus on macronutrients: results from the A TO Z study
Language: 
English
Short Title: 
Micronutrient quality of weight-loss diets that focus on macronutrients
Abstract: 

BACKGROUND: Information on the micronutrient quality of alternative weight-loss diets is limited, despite the significant public health relevance. OBJECTIVE: Micronutrient intake was compared between overweight or obese women randomly assigned to 4 popular diets that varied primarily in macronutrient distribution. DESIGN: Dietary data were collected from women in the Atkins (n = 73), Zone (n = 73), LEARN (Lifestyle, Exercise, Attitudes, Relationships, Nutrition) (n = 73), and Ornish (n = 72) diet groups by using 3-d, unannounced 24-h recalls at baseline and after 8 wk of instruction. Nutrient intakes were compared between groups at 8 wk and within groups for 8-wk changes in risk of micronutrient inadequacy. RESULTS: At 8 wk, significant differences were observed between groups for all macronutrients and for many micronutrients (P < 0.0001). Energy intake decreased from baseline in all 4 groups but was similar between groups. At 8 wk, a significant proportion of individuals shifted to intakes associated with risk of inadequacy (P < 0.05) in the Atkins group for thiamine, folic acid, vitamin C, iron, and magnesium; in the LEARN group for vitamin E, thiamine, and magnesium; and in the Ornish group for vitamins E and B-12 and zinc. In contrast, for the Zone group, the risk of inadequacy significantly decreased for vitamins A, E, K, and C (P < 0.05), and no significant increases in risk of inadequacy were observed for other micronutrients. CONCLUSIONS: Weight-loss diets that focus on macronutrient composition should attend to the overall quality of the diet, including the adequacy of micronutrient intakes. Concerning calorie-restricted diets, there may be a micronutrient advantage to diets providing moderately low carbohydrate amounts and that contain nutrient-dense foods.

Author(s): 
Gardner, Christopher D.
Kim, Soowon
Bersamin, Andrea
Dopler-Nelson, Mindy
Otten, Jennifer
Oelrich, Beibei
Cherin, Rise
Item Type: 
Journal Article
Publication Title: 
The American Journal of Clinical Nutrition
Journal Abbreviation: 
Am. J. Clin. Nutr.
Publication Date: 
Aug 2010
Publication Year: 
2010
Pages: 
304-312
Volume: 
92
Issue: 
2
ISSN: 
1938-3207
DOI: 
10.3945/ajcn.2010.29468
Library Catalog: 
NCBI Published Medical (?)
Extra: 
PMID: 20573800 PMCID: PMC2904033

Turabian/Chicago Citation

Christopher D. Gardner, Soowon Kim, Andrea Bersamin, Mindy Dopler-Nelson, Jennifer Otten, Beibei Oelrich and Rise Cherin. Aug 2010. "Micronutrient quality of weight-loss diets that focus on macronutrients: results from the A TO Z study." The American Journal of Clinical Nutrition 92: 2: 304-312. 10.3945/ajcn.2010.29468.

Wikipedia Citation

<ref> {{Cite journal | doi = 10.3945/ajcn.2010.29468 | issn = 1938-3207 | volume = 92 | pages = 304-312 | last = Gardner | first = Christopher D. | coauthors = Kim, Soowon, Bersamin, Andrea, Dopler-Nelson, Mindy, Otten, Jennifer, Oelrich, Beibei, Cherin, Rise | title = Micronutrient quality of weight-loss diets that focus on macronutrients: results from the A TO Z study | journal = The American Journal of Clinical Nutrition | date = Aug 2010 | pmid = | pmc = }} </ref>