AWM: Nutrient Adequacy and Caloric Restriction (2013)

AWM: Nutrient Adequacy and Caloric Restriction (2013)

• Intervention
  What is the relationship between nutrient adequacy and caloric restriction (assuming a food-based diet without vitamin or mineral supplementation)?

  • Conclusion

    Several studies report changes in nutrient adequacy with caloric restriction, however the extent of nutrient inadequacy and the nutrients affected are dependent on the composition of the diet followed, as well as on the nutritional needs of the individual. Limited research reports reductions in nutrient adequacy with weight loss through an energy restriction of at least 500kcal per day or daily consumption below 1,200kcal per day. Additional long-term studies in this area are needed.

  • Grade: II
    • Grade I means there is Good/Strong evidence supporting the statement;
    • Grade II is Fair;
    • Grade III is Limited/Weak;
    • Grade IV is Expert Opinion Only;
    • Grade V is Not Assignable.
    • High (A) means we are very confident that the true effect lies close to that of the estimate of the effect;
    • Moderate (B) means we are moderately confident in the effect estimate;
    • Low (C) means our confidence in the effect estimate is limited;
    • Very Low (D) means we have very little confidence in the effect estimate.
    • Ungraded means a grade is not assignable.
  • Evidence Summary: What is the relationship between nutrient adequacy and caloric restriction (assuming a food-based diet without vitamin and/or mineral supplementation)?
    • Detail
    • Quality Rating Summary
      For a summary of the Quality Rating results, click here.
    • Worksheets
      • Ashley JM, Herzog H, Clodfelter S, Bovee V, Schrage J, Pritsos C. Nutrient adequacy during weight loss interventions: A randomized study in women comparing the dietary intake in a meal replacement group with a traditional food group. Nutrition Journal 2007; 6: 12.
      • Gardner CD, Kim S, Bersamin A, Dopler-Nelson M, Otten J, Oelrich B, Cherin R. Micronutrient quality of weight-loss diets that focus on macronutrients: results from the A TO Z study. Am J Clin Nutr. 2010; 92 (2): 304-312.
      • Ma Y, Pagoto SL, Griffith JA, Merriam PA, Ockene IS, Hafner AR, Olendzki BC. A dietary quality comparison of popular weight-loss plans. J Am Diet Assoc. 2007; 107 (10): 1,786-1,791.
      • Truby H, Hiscutt R, Herriot AM, Stanley M, Delooy A, Fox KR, Baic S, Robson PJ, Macdonald I, Taylor MA, Ware R, Logan C, Livingstone M. Commercial weight loss diets meet nutrient requirements in free living adults over 8 weeks: a randomised controlled weight loss trial. Nutr J. 2008; 7: 25.
  • Search Plan and Results: AWM: Nutrient Adequacy 2012