MNT: Effectiveness of MNT for Obesity (2009)
What is the evidence to support effectiveness of MNT provided by a Registered Dietitian for overweight/obesity in otherwise healthy adults?
Medical nutrition therapy (MNT) provided by a Registered Dietitian results in both statistically and clinically significant weight loss in otherwise healthy overweight and obese adults. Four studies regarding the effectiveness of medical nutrition therapy for under six months reported significant weight losses of approximately one to two pounds per week. Four studies regarding the effectiveness of MNT from six to twelve months reported significant mean weight losses of up to 10% of body weight. Four studies report maintenance of this weight loss beyond one year. In these studies, both individual and group sessions were employed with weekly and monthly sessions.
- 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.
Evidence Summary: What is the evidence to support effectiveness of MNT by a Registered Dietitian for overweight/obesity in otherwise healthy adults?
- Quality Rating Summary
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- 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.
- Dengel DR, Kelly AS, Olson TP, Kaiser DR, Dengel JL, Bank AJ. Effects of weight loss on insulin sensitivity and arterial stiffness in overweight adults. Metabolism 2006; 55: 907-911.
- Digenio AG, Mancuso JP, Gerber RA, Dvorak RV. Comparison of methods for delivering a lifestyle modification program for obese patients: A randomized trial. Ann Intern Med 2009; 150 (4): 255-262.
- Eilat-Adar S, Eldar M, Goldbourt U. Association of intentional changes in body weight with coronary heart disease event rates in overweight subjects who have an additional coronary risk factor. Am J Epidemiol 2005; 161: 352-358.
- Feigenbaum A, Pasternak S, Zusk E, Sarid M, Vinker S. Influence of intense multidisciplinary follow-up and orlistat on weight reduction in a primary care setting. BMC Fam Pract. 2005; 6(1): 5.
- Holm RP, Taussig MT, Carlton E. Behavioral modification in a weight-reduction program. J Am Diet Assoc. 1983; 83(2): 170-174.
- Melin I, Karlstrom B, Lappalainen R, Berglund L, Mohsen R, Vessby B. A programme of behaviour modification and nutrition counselling in the treatment of obesity: a randomized 2-y clinical trial. Int J Obesity 2003;27:1127-1135.
- Raatz SK, Wimmer JK, Kwong CA and Shalamar DS. Intensive diet instruction by registered dietitians improves weight-loss success. J Am Diet Assoc. 2008; 108 (1): 110-113.
- Richardson CR, Brown BB, Foley S, Dial KS, Lowery JC. Feasibility of adding enhanced pedometer feedback to nutritional counseling for weight loss. J Med Internet Res. 2005; 7 (5): e56.
- Sacks FM, Bray GA, Carey VJ, Smith SR, Ryan DH, Anton SD, McManus K, Champagne CM, Bishop LM, Laranjo N, Leboff MS, Rood JC, de Jonge L, Greenway FL, Loria CM, Obarzanek E, Williamson DA. Comparison of weight-loss diets with different compositions of fat, protein, and carbohydrates. N Engl J Med. 2009; 360 (9): 859-873.
- Schneider R, Golzman B, Turkot S, Kogan J, Oren S. Effect of weight loss on blood pressure, arterial compliance, and insulin resistance in normotensive obese subjects. Am J Med Sci. 2005; 330(4): 157-160.
- Willaing I, Ladelund S, Jorgensen T, Simonsen T, Nielsen LM. Nutritional counselling in primary health care: a randomized comparison of an intervention by general practitioner or dietician. European Journal of Cardiovascular Prevention and Rehabilitation, 2004; 11: 513-520.
Search Plan and Results: Effectiveness of MNT for Overweight/Obesity in Adults 2009