Director

Heidi J. Silver, PhD, RD

Heidi J. Silver, PhD, RD

Dr. Silver’s research is an integral component of an emerging dynamic translational research program in obesity, the metabolic syndrome and diabetes. Her studies target modulating the macronutrient composition of dietary intakes in obese adults and children, specifically dietary fat and fatty acids, to investigate effects on the pathophysiology, risk factors and outcomes of diabetes, obesity and related comorbidities. She designs translational dietary food and supplement interventions to further understand effects on metabolism and energy homeostasis, body composition, insulin resistance, oxidative stress and inflammation. Dr. Silver has completed several randomized controlled trials and has an active database of over 600 individuals with obesity and/or diabetes who are interested in participating in clinical research projects. Dr. Silver has trained over 500 registered dietitians in diet assessment methods. As Director of the Nutrition and Diet Assessment Core, she supervises a team of registered dietitians and research assistants who perform diet and nutrition assessments, nutrition education, nutrition counseling and nutrition therapy.

Holly Mason

   HOLLY MASON, MS, RD, LDN

   As a Research Dietitian in the Co​re, Holly performs data collection, data entry, diet                         assessments, menu development, nutrient analysis, and metabolic and exercise testing in       various research studies, as well as equipment maintenance and quality control.                             Additionally, she is responsible for scheduling metabolic and exercise testing and nutrition-         related study subject visits in various research studies and providing nutrition education           and counseling to study subjects and monitoring progress in various research studies.

Timothy Olszewski

   TIM OLSZEWSKI, MS, RDN, LDN

   Tim is the study coordinator for the TIPs Microbiome Study (IRB #171170) and VA GERD               Study (IRB #141715). His duties include development of protocol and consent forms,                     recruitment and retention of study subjects, menu development and nutrient analysis,                 development of a REDCap data collection database, administering study procedures and             subject scheduling, dietary intake assessment, sample and data collections, data entry, and         manuscript development. Additional departmental duties include conducting blood specimen    processing and NDSR nutrition analysis software data entry as well as serving as backup               for bike and treadmill VO2max, EKG, graded exercise testing, and bioelectric impedance               analysis.

Raye Pitts   RAYE PITTS

   Raye creates and prepares nutrient-controlled meals for research studies. She assists in               developing menus and maintaining food inventories. She also performs daily Metabolic               Kitchen equipment and supply-related tests as well as creating, maintaining, and updating          monthly reports. Lastly, she assists research dietitians with metabolic testing. 

Marian Wakefield

   MARIAN WAKEFIELD

   As the Dietetic Technician, Marian gives Diet Instruction to patients and study participants,           assists in creating and developing study specific menus, and meal/menu scheduling. She is         also responsible for Food and Meal Inventories, Purchasing, and Utilization through                       spreadsheets, databases, and monthly reports.