Research Home

Laura D. Byham-Gray, PhD, RDN, FNKF

  • Protein-Energy Wasting: Dr. Byham-Gray studies how PEW is related to energy expenditure and studies the impact dialysis can have on the energy balance in patients with CKD. As current understandings of the metabolic demands theorized within this unique population are limited, studying this arena and developing an equation will help formulate more personalized prescriptions related to one of the main contributors for PEW like EE and ultimately have a positive impact on patient outcomes.
  • PEW from Patient’s Perspective: Dr. Byham-Gray is studying PEW not only in terms of contributors but also from the patient’s perspective. What do they see as really putting them at risk or what has kept them from developing PEW? Taking a very patient-centered approach, Dr. Byham-Gray hopes to empower her patients to make changes in their management.
  • Nutrition Therapy: In order to help CKD patients maintain a nutritional balance, Dr. Byham-Gray conducts studies in nutrition therapy to look at effective interventions that may help prevent PEW or other types of sequelae that occur secondary to the disease, e.g. bone and mineral disorders.

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Name: Laura D. Byham-Gray, PhD, RDN, FNKF

Title: Professor & Vice Chair of Research


Other items can be added as desired (education, etc)

Name:  Emily Peters, MPH

Title:  Study Coordinator


Morrow, EA, Marcus, A, Byham-Gray, LD.  Comparison of a handheld indirect calorimetry device and predictive energy equations among individuals on maintenance hemodialysis. J Renal Nutr. 2018;27(6): 402-411.

Feasel-Aklilu, S, Marcus, A, Parrott, JS, Peters, E, Byham-Gray, LD. Is Nutrition Specific Quality of Life associated with nutritional status? J Renal Nutr. 2018; 28(4):283–291.

Zelig R, Byham-Gray L, Singer SR, Hoskin ER, Fleisch Marcus A, Verdino G, Rigassio Radler D, Touger-Decker R. Dentition and Malnutrition Risk in Community-Dwelling Older Adults.  Journal of Aging, Research and Clinical Practice, (JARCP), 1/18/2018.

Byham-Gray, LD, Parrott, JS, Peters, EN, Gould-Fogerite, SG, Hand, RK, Ahrens, S, Marcus, AF, Fiutem, JJ. Modeling a predictive energy equation specific for maintenance hemodialysis.  JPEN, J Parenter Enteral Nutr.  ePub DOI: 10.1177/0148607117696942.

Plant MK, Marcus AF, Ziegler J, Byham-Gray L. Testing of a Tool to Measure Practice-Based Research Involvement for Registered Dietitian Nutritionists in Clinical Practice. Topics in Clinical Nutrition, 2017;32(1):47-59.

Hutcheon DA, Byham-Gray LD, Marcus AF, Scott JD, Miller M. Predictors of preoperative weight loss achievement in adult bariatric surgery candidates while following a low-calorie diet for 4 weeks. Surgery for Obesity and Related Diseases, 2017;13(6):1041-1051.

Sum SS, Marcus AF, Blair D, Olejnik LA, Cao J, Parrott JS, Peters EN, Byham-Gray LD. Comparison of Subjective Global Assessment and Protein Energy Wasting Score to Nutrition Evaluations conducted by Registered Dietitian Nutritionists in identifying risk of Protein Energy Wasting in Maintenance Hemodialysis Patients. Journal of Renal Nutrition, doi: 10.1053/j.jrn.2017.04.006.

Olejnik LA, Peters EN, Parrott JS, Marcus AF, Brody RA, Hand RK, Fiutem JJ, Byham-Gray LD. Abbreviated steady state intervals for measuring resting energy expenditure in patients on maintenance hemodialysis. JPEN J Parenter Enteral Nutr.  Published online before print July 27, 2016, doi: 10.1177/0148607116660981.

Zelig R, Touger-Decker R, Chung M, Byham-Gray L. Associations between tooth loss, with or without dental prostheses, and malnutrition risk in older adults: a systematic review. Top Clin Nutr. 2016;31(3):232-247.

Bechard LJ, Duggan C, Touger-Decker R, Parrott JS, Rothpletz-Puglia P, Byham-Gray, LD, Heyland, D., Mehta, NM. Nutritional Status Based on Body Mass Index Is Associated With Morbidity and Mortality in Mechanically Ventilated Critically Ill Children in the PICU. Critical Care Medicine. 2016;44(8):1530-1537.

Boyd M, Byham-Gray L, Touger-Decker R, Marcus AF, King C. Research interest and research involvement among US registered dietitian nutritionists. Topics in Clinical Nutrition, 2016;31(3):267-277.

Wanik J, Marcus AF, Radler DR, Byham-Gray L, Touger-Decker R. Physical activity level is associated with maintaining anthropometric improvements among participants in a worksite wellness program. American Journal of Lifestyle Medicine. Published online before print January 3, 2016, doi: 10.1177/1559827615624420.

Willcutts KF, Chung MC, Erenberg MLS, Finn KL, Schirmer BD, Byham-Gray LD. Early oral feeding as compared with traditional timing of oral feeding after upper gastrointestinal surgery: A systematic review and meta-analysis. Ann Surg. 2016;264(1):54-63.

Boyd M, Byham-Gray L, Touger-Decker R, Marcus AF, King C. Research interest and research involvement among US registered dietitian nutritionists. Top Clin Nutr. 2016;31(3):267-277.

Macaluso S, Marcus AF, Rigassio-Radler D, Byham-Gray L, Touger-Decker R. Increased physical activity leads to improved health-related quality of life among employees enrolled in a 12-week worksite wellness program. J Occup Environ Med. 2015;57(11):1214-21.

Therrien, M, Byham-Gray, LD, Beto, J.  A review of dietary intake studies in maintenance hemodialysis patients.  J Renal Nutr, 2015; 25(4): 329–338.

Ganzer H, Rothpletz-Puglia P, Byham-Gray L, Murphy B, Touger-Decker R. Support Care Cancer. 2015;23(11):  3257-3268.

Schwartz V, Rothpletz-Puglia P, Denmark R, Byham-Gray L. Comparison of Standardized Patients and Real Patients as an Experiential Teaching Strategy. Patient Education and Counseling Nov. 2014

King C, Byham-Gray L, Parrott JS, O’Sullivan Maillet J, Roberts MM, Splett P. Applying social cognitive career theory to Registered Dietitian research involvement, a randomized controlled trial. J Allied Health. 2014;43(4):201-211.

daSilva L, Brody RA, Byham-Gray L, Parrott J.  Online education improves Canadian dietitians attitudes and knowledge regarding recommending and ordering multivitamin/mineral supplements.  Canadian Journal of Dietetic Practice and Research  2014; 75(3): 111-117.

Parker, AR, Byham-Gray, L, Denmark, R, Winkle, PJ.  The effect of medical nutrition therapy by a registered dietitian nutritionist in patients with prediabetes participating in a randomized controlled clinical research trial.  J Acad Nutr Diet.  2014;114(111):  1739-1748.

Taylor B, Brody R, Denmark R, Southard R, Byham-Gray L.  Improving enteral delivery through the adoption of the “feed early enteral diet adequately for maximum effect (FEED ME)” protocol in a surgical trauma ICU: A quality improvement review.  Nutr Clin Pract.  2014;29(5):639-48.

King C, Byham-Gray L, O’Sullivan-Maillet J, Parrott JS, Splett P, Roberts MM.  Dietitians and research: Facilitating involvement.  History of dietitian involvement in dietetics research in the US.  Topics in Clinical Nutrition.  2014;29(3):227-238.

Finn, KF, Chung, MC, Rothpletz-Puglia, P, Byham-Gray, LD. Impact of providing a combination lipid emulsion compared with a standard soybean oil lipid emulsion in children receiving parenteral nutrition: A systematic review and meta-analysis. Journal of Parenteral and Enteral Nutrition. 2015;39(6):656-67.

Kent PS, McCarthy MP, Burrowes JD, McCann L, Pavlinac J, Goeddeke-Merickel CM, Wiesen K, Kruger S, Byham-Gray L, Pace RC, Hannahs V, Benner D.  Academy of Nutrition and Dietetics and National Kidney Foundation:  Revised 2014 standards of practice and standards of professional performance for Registered Dietitian Nutritionists (competent, proficient, and expert) in nephrology nutrition. Journal of Renal Nutrition.  2014;24(5):275-285.

Kent PS, McCarthy MP, Burrowes JD, McCann L, Pavlinac J, Goeddeke-Merickel CM, Wiesen K, Kruger S, Byham-Gray L, Pace RC, Hannahs V, Benner D.  Academy of Nutrition and Dietetics and National Kidney Foundation:  Revised 2014 standards of practice and standards of professional performance for Registered Dietitian Nutritionists (competent, proficient, and expert) in nephrology nutrition. J Acad Nutr Diet.  2014;114:1448-1457.

Loomis, T, Byham-Gray, L, Ziegler, J, Parrott, JS.  The impact of standardized feeding guidelines on enteral nutrition administration, growth outcomes, metabolic bone disease and cholestasis in a neonatal intensive care unit. Journal of Pediatric Gastroenterology and Nutrition.  2014;59: 93–98.

Therrien, M, Byham-Gray, LD, Denmark, R, Beto, JA.  Comparison of dietary intake among women on maintenance dialysis to a Women’s Health Initiative cohort: Results from the NKF-CRN Second National Research Question Collaborative Study.  Journal of Renal Nutrition.  2014;24:72-80.

Byham-Gray, L, Parrot, JS, Ho, WY, Sundell, MA, Ikizler, TA.  Development of predictive energy equation-A pilot study.  Journal of Renal Nutrition. 2014;24: 32-41.

Vogt, A., Byham-Gray, L., Touger-Decker, R. Perceptions, attitudes, knowledge, and clinical use of evidence-based practice among US registered dietitians: A prospective descriptive pilot study. Topics in Clinical Nutrition. 2013;28(3):283-294.

Moore, LM, Byham-Gray LD, Parrott JS, Rigassio Radler D, Mandayam S, Jones SL, Mitch WE, Gaber AO. The mean dietary protein intake at different stages of chronic kidney disease is higher than current guidelines. Kidney International. 2013; doi:10.1038/ki.2012.420

Vero LM, Byham-Gray L, Parrott JS, Steiber AL. Use of the subjective global assessment to predict health-related quality of life in chronic kidney disease stage 5 patients on maintenance hemodialysis. Journal of Renal Nutrition. 2013;23(2):141-147.

Blair D, Byham-Gray LD, Sweet SJ, Denmark R, Parrott JS, Lewis E, McCaffrey S, Thomson S. Effect of a dietitian-managed bone algorithm on serum phosphorus level in maintenance hemodialysis patients. Journal of Renal Nutrition. 2013;23(2):98-105.

Cohen DA, Byham-Gray L, Denmark RM. Impact of two pulmonary enteral formulations on nutritional indices and outcomes. Journal of Human Nutrition and Dietetics. 2013;26, 286–293.

Brody RA, Byham Gray L, Touger-Decker R, Passannante MR, O’Sullivan Maillet J.  Identifying components of advanced-level clinical nutrition practice: a Delphi study.  Journal of the Academy of Nutrition and  Dietetics. 2012;112(6):859-869.

Bruno M, Touger-Decker R, Byham-Gray L, Denmark R.  Workplace weight loss program: Impact on quality of life. Journal of Occupational and Environmental Medicine. 2011:  53 (12):1396–1403.

Zelig R, Byham-Gray L, Parrott J, Rigassio-Radler D, and Touger-Decker R. Impact for continuing education: Applying the nutrition care process and model and the international dietetics and nutrition terminology for dietitians in long term care. Topics in Clinical Nutrition. 2011; 26(3): 268-280. Rigby-Koutz J, Touger-Decker R, Brody R, Rigassio-Radler D, Khan H, Byham-Gray L, O’Sullivan Maillet J.  The perceived benefits of master’s degrees in two samples of Registered Dietitians.  Topics in Clinical Nutrition; 25(3):202-212, July/September 2010.

Ziegler J, Rothpletz-Puglia P, Touger-Decker R, Byham-Gray L, O’Sullivan-Maillet J, Denmark RM. Resting energy expenditure in overweight and obese adults. Topics in Clinical Nutrition.  2010;25(2):180-7.

The Joint Standards Task Force of the American Dietetic Association Renal Dietitians Dietetic Practice Group and the National Kidney Foundation Council on Renal Nutrition:  Brommage, D., Karalis, M, Martin, C., McCarthy, M, Benner, D., Goeddeke-Merickel, CM, Wiesen, K., Byham-Gray, LD, House, JL, Pavlinac, J., McCann, L.  Standards of Practice and Standards of Professional Performance for Registered Dietitians (Generalist, Specialty, and Advanced) in Nephrology Care.  Journal of the American Dietetic Association. 2009.  109(9):  1617-1625.e3.

Thelen, B, Byham-Gray, LD, Touger-Decker, R, Maillet, JO, Khan, H. Survey of Current Job Functions of Renal Dietitians.  Journal of Renal Nutrition. 2009; 19 (6):  450-461.

Byham-Gray, L.D., Drasher, T., Deckman, K., Graham, D., Liftman, C., Roberto, L.,  Peiffer, P., Denmark, R.  Effect of aggressive osteodystrophy management on clinical outcomes in Stage 5 Chronic Kidney Disease.  Journal of Renal Nutrition.  2009; 19:  321-333.

Munoz, N., Touger-Decker R, Byham Gray L, O’Sullivan Maillet J.  Effect of an oral health assessment education program on murses’ knowledge and patient care practices in skilled nursing facilities.  Special Care Dentistry. 2009; 29:179-185.

Brody RA, Byham-Gray L, Touger-Decker R.  A review of characteristics of graduates in the allied health and nursing professions.  Entry level and advanced practice.  Topics in Clinical Nutrition. 2009; 24: 181-192.

Johnson, T., Avery, G., Byham-Gray L.  Vitamin D and metabolic syndrome.  Topics in Clinical Nutrition. 2009; 24: 47-54.

Tatum C, Touger-Decker R, Brody R, Byham-Gray L, O’Sullivan-Maillet J.  Perceived needs for graduate level clinical nutrition education for registered dietitians.  Topics in Clinical Nutrition. 2008; 23: 320-332.

Touger-Decker, R., Maillet, J.O., Byham-Gray, L.D., Stoler, F.D.  Wellness in the workplace:  A 12week wellness program in an academic health sciences university.  Topics in Clinical Nutrition.  2008; 23: 244-251.

Blair, D., Byham-Gray, L., Lewis, E., McCaffrey, S. Prevalence of vitamin D [25(OH)D] deficiency and effects of supplementation with ergocalciferol (Vitamin D2) in Stage 5 Chronic Kidney Disease patients.  Journal of Renal Nutrition.  2008; 18:375-382.

Horan K, O’Sullivan Maillet J, Wien M, Touger-Decker R, Matheson P, Byham-Gray L.  An overview of nutrition and diabetes management. Topics in Clinical Nutrition. 2006; 21: 328-340.

Byham-Gray, L.D., Gilbride, J.A., Dixon, L.B., Stage, F.K.  Predictors for research involvement among registered dietitians.  Journal of the American Dietetic Association.  2006;106:2008-2015.

Seres, D., Compher, C., Seidner, D., Byham-Gray, L.D., Gervasio, J. McClave, S. and the A.S.P.E.N. Standards and Guidelines Committees.  2005 American Society of Parenteral and Enteral Nutrition (A.S.P.E.N.)  Standards and Guidelines Survey.  Nutrition in Clinical Practice.  2006;21:529-532.

Byham-Gray, L.D., Wiesen, K., Goode, J.  Scope of practice in renal nutrition.  Journal of Renal Nutrition.  2006;16:160-7.

Byham-Gray, L.D. Weighing the evidence:  Energy determinations across the spectrum of kidney disease.  Journal of Renal Nutrition.  2006;16:17-26.

Byham-Gray, L.D., Gilbride, J.A., Dixon, L.B., Stage, F.K.  Evidence-based practice:  What are dietitians’ perceptions, attitudes, and knowledge?  Journal of the American Dietetic Association.  2005;105:1574-1581.

Green, D.M., Maillet, J.O., Touger-Decker, R., Byham-Gray, L., Matheson, P.  Functions performed by level of practice of registered dietitian members of the Diabetes Care and Education Dietetic Practice Group.  Journal of the American Dietetic Association.  2005; 105:1280-1284.

Byham-Gray, L.D.  Research:  A review of the “body” and the “backbone” for the dietetics profession.  Topics in Clinical Nutrition.  2005;20(1):1-13.

Byham-Gray, LD.  Outcomes research in nutrition and chronic kidney disease: Perspectives, issues in practice, and processes for improvement.  Advances in Chronic Kidney Disease. 2005;12(1):96-106.

Huhmann, M., Touger-Decker, R., Byham-Gray, L.D., Maillet, J.O., VonHagen, S.  Comparison of dysphagia screening by a registered dietitian in acute stroke patients to speech language pathologist’s evaluation.  Topics in Clinical Nutrition.  2004;19(3):239-249.

Szebalskie, M. and Byham-Gray, L.D.  Conference Summary:  Nutrition management of cancer:  Past, present, and future trends.  Topics in Clinical Nutrition.  2003;18(3):150-153.

Vickery, C.E., Cotugna, N., and Byham-Gray, L.D.  Use and barriers to use of laboratory data by clinical dietitians.  Hospital Topics. 2001;11:5-9.

Byham-Gray, L.D.  Commentary:  Prospective analysis of patterns of weight change in stage IV human immunodeficiency virus infection.  Nutrition in Clinical Practice. 1994; 9(3):116-117.

Byham-Gray, L.D.  Commentary:  Standards of Practice for Nutrition Support Dietitian:  Importance and value to practitioners.  Nutrition in Clinical Practice. 1994;9(4):156-157.

Byham-Gray, L.D.  Commentary:  Nutrition screening and assessment:  Current practices and dietitians’ leadership roles.  Nutrition in Clinical Practice. 1994;9(5):200-201.

Byham-Gray, L.D.  Commentary:  Nutrition screening for malnutrition:  Potential economic impact at a community hospital.  Nutrition in Clinical Practice. 1994;9(5):  201.

Byham, L.D. and Cieri, E.  Intraperitoneal nutrition.  Contemporary Dialysis and Nephrology. 1991;10:12-14.

Cieri, E., Teti, S., and Byham, L.D.  Nursing the patient on intradialytic parenteral nutrition.  Contemporary Dialysis and Nephrology. 1991;12(4):49-50.

Byham, L.D.  Dietary fat and natural killer cell function.  Nutrition Today. 1991;26(1): 31-36.

Byham, L.D.  and Vickery, C.E.  Compliance and health promotion.  Health Values. 1988;12(4):5-11.



Presidential Citation for Outstanding Achievement

University of Delaware, College of Health Sciences


Excellence in Teaching Award

RBHS (formerly UMDNJ)-SHRP


Joel D. Kopple Award

National Kidney Foundation-Council on Renal Nutrition


Susan C. Knapp Excellence in Education Award

National Kidney Foundation-Council on Renal Nutrition


Outstanding Service Award

Academy of Nutrition and Dietetics (AND)-Renal Dietitians Dietetic Practice Group (RPG)


Dean’s Excellence in Research Award

RBHS (formerly UMDNJ)-SHRP


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