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Barnes S, Kinne E, Chowdhury S, Loong S, Moretz J, Sabate J. Comparison and precision of visceral adipose tissue measurement techniques in a multisite longitudinal study using MRI. Magn Reson Imaging 2024; 112:82-88. [PMID: 38971268 DOI: 10.1016/j.mri.2024.07.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 06/28/2024] [Accepted: 07/03/2024] [Indexed: 07/08/2024]
Abstract
BACKGROUND Measurement of visceral adipose tissue (VAT) using magnetic resonance imaging (MRI) is considered accurate and safe. Single slice measurements perform similar to volumetric measurements for cross-sectional observation studies but may not perform as well for longitudinal studies. This study compared the performance of single slice to volumetric VAT measurements in a prospective longitudinal study. Consistency of results across sites and over time was also evaluated. METHODS A total of 935 healthy participants were recruited and scanned with MRI twice, approximately six months apart as part of a randomized, controlled, parallel arm, unblinded study conducted at four clinical centers in the United States. A 3D Dixon MRI sequence was used to image the abdomen, and visceral fat volumes were quantified for the abdomen, reduced coverage volumes (11 and 25 slices), and at single slices positioned at anatomical landmarks. A traveling phantom was scanned twice at all imaging sites. RESULTS The correlation of single slice VAT measurement to full abdomen volumetric measurements ranged from 0.78 to 0.93 for cross-sectional observation measurements and 0.30 to 0.55 for longitudinal change. Reduced coverage volumetric measurement outperformed single slice measurements but still showed improved precision with more slices with cross-sectional observation and longitudinal correlations of 0.94 and 0.66 for 11 slices and 0.94 and 0.70 for 25 slices, respectively. No significant differences were observed across sites or over time with the traveling phantom and the volume measurements had a standard deviation of 14.1 mL, 2.6% of the measured volume. CONCLUSION Single slice VAT measurements had significantly lower correlation with abdomen VAT volume for longitudinal change than for cross-sectional observation measurements and may not be suitable for longitudinal studies. Data from multiple sites, different scanners, and over time did not show significant differences.
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Affiliation(s)
- Samuel Barnes
- Department of Radiology, Loma Linda University School of Medicine, Loma Linda, CA, United States of America.
| | - Erica Kinne
- Department of Radiology, Loma Linda University School of Medicine, Loma Linda, CA, United States of America
| | - Shilpy Chowdhury
- Department of Radiology, Loma Linda University School of Medicine, Loma Linda, CA, United States of America
| | - Spencer Loong
- Department of Psychology, Loma Linda University School of Behavioral Health, Loma Linda, CA, United States of America
| | - Jeremy Moretz
- Department of Radiology, Loma Linda University School of Medicine, Loma Linda, CA, United States of America
| | - Joan Sabate
- Center for Nutrition, Lifestyle and Disease Prevention, Loma Linda University School of Public Health, Loma Linda, CA, United States of America
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Matthan NR, Lovato L, Petersen KS, Kris-Etherton PM, Sabate J, Rajaram S, Li Z, Reboussin DM, Lichtenstein AH. Effect of daily avocado consumption for 6 mo compared with habitual diet on red blood cell fatty acid profiles and association with cardiometabolic risk factors in individuals with abdominal obesity: a randomized trial. Am J Clin Nutr 2024; 120:794-803. [PMID: 39128497 DOI: 10.1016/j.ajcnut.2024.08.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 08/02/2024] [Accepted: 08/06/2024] [Indexed: 08/13/2024] Open
Abstract
BACKGROUND Avocado intake improves dietary fat quality, but the subsequent impact on red blood cell (RBC) saturated (SFA), monounsaturated (MUFA), polyunsaturated (PUFA), and trans-fatty acid (TFA) composition and association with cardiometabolic health, has not been elucidated. OBJECTIVES To compare the effect of consuming 1 avocado/d relative to habitual diet (HAB) on RBC-FA profiles, and their association with visceral adiposity and cardiometabolic risk factors (CMRFs) in individuals with abdominal obesity. METHODS RBC-FA profiling at baseline, 3- and 6 mo was conducted in participants (n = 994) from the Habitual Diet and Avocado Trial (HAT). HAT was a multisite, free-living, parallel-arm intervention study in which participants were randomly assigned to either the avocado-supplemented group (AVO, usual diet with 1 avocado/d) or the HAB group (usual diet with limited avocado intake) for 6 mo. Changes in RBC-FA profiles, a secondary outcome measure, were determined within and between groups using linear regression and mixed effect models, adjusting for age, sex, BMI, clinical site, smoking status, and percentage of energy intake from fat at baseline. The association between changes in RBC-FAs with visceral adiposity measures and CMRFs was assessed after covariate and False Discovery Rate (FDR <0.05) adjustment. RESULTS No major differences in RBC-FA profiles were observed between groups, with the exception of MUFA cis-vaccenic [18:1n-7c], which was significantly higher in AVO (β: 0.11 [0.05, 0.17]) compared with the HAB (β: 0.03 [-0.03, 0.08]) participants. In the HAB but not AVO group, increases in MUFA cis (18:1n-7c, oleic [18;1n-9c], erucic [22:1n-9c]) and MUFA trans (palmitelaidic [16:1n-7t], vaccenic [18:1n-7t], elaidic [18:1n-9t], and petroselaidic [18;1n-10-12t), as well as PUFA γ-linolenic [18:3n-6], dihomo-γ-linolenic [20:3n-6], arachidonic [20:4n-6], and α-linolenic [18:3n-3] were associated with unfavorable changes in visceral adiposity measures, lipid profiles, glucose, insulin and high sensitivity C-reactive protein concentrations. CONCLUSIONS Daily avocado intake over 6-mo modified RBC-MUFA composition, notably 18:1n-7c, and potentially mitigated some of the unfavorable individual RBC-FA-CMRF associations observed over time in the HAB group. This trial was registered at https://clinicaltrials.gov/study as NCT03528031.
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Affiliation(s)
- Nirupa R Matthan
- Cardiovascular Nutrition Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA, United States.
| | - Laura Lovato
- Department of Biostatistics and Data Science, Wake Forest University School of Medicine, Winston-Salem, NC, United States
| | - Kristina S Petersen
- Department of Nutritional Sciences, Pennsylvania State University, University Park, PA, United States
| | - Penny M Kris-Etherton
- Department of Nutritional Sciences, Pennsylvania State University, University Park, PA, United States
| | - Joan Sabate
- Center for Nutrition, Healthy Lifestyle and Disease Prevention, Loma Linda University School of Public Health, Loma Linda, CA, United States
| | - Sujatha Rajaram
- Center for Nutrition, Healthy Lifestyle and Disease Prevention, Loma Linda University School of Public Health, Loma Linda, CA, United States
| | - Zhaoping Li
- Center for Human Nutrition, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States
| | - David M Reboussin
- Department of Biostatistics and Data Science, Wake Forest University School of Medicine, Winston-Salem, NC, United States
| | - Alice H Lichtenstein
- Cardiovascular Nutrition Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA, United States
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Kafali SG, Shih SF, Li X, Kim GHJ, Kelly T, Chowdhury S, Loong S, Moretz J, Barnes SR, Li Z, Wu HH. Automated abdominal adipose tissue segmentation and volume quantification on longitudinal MRI using 3D convolutional neural networks with multi-contrast inputs. MAGMA (NEW YORK, N.Y.) 2024; 37:491-506. [PMID: 38300360 DOI: 10.1007/s10334-023-01146-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 12/18/2023] [Accepted: 12/27/2023] [Indexed: 02/02/2024]
Abstract
OBJECTIVE Increased subcutaneous and visceral adipose tissue (SAT/VAT) volume is associated with risk for cardiometabolic diseases. This work aimed to develop and evaluate automated abdominal SAT/VAT segmentation on longitudinal MRI in adults with overweight/obesity using attention-based competitive dense (ACD) 3D U-Net and 3D nnU-Net with full field-of-view volumetric multi-contrast inputs. MATERIALS AND METHODS 920 adults with overweight/obesity were scanned twice at multiple 3 T MRI scanners and institutions. The first scan was divided into training/validation/testing sets (n = 646/92/182). The second scan from the subjects in the testing set was used to evaluate the generalizability for longitudinal analysis. Segmentation performance was assessed by measuring Dice scores (DICE-SAT, DICE-VAT), false negatives (FN), and false positives (FP). Volume agreement was assessed using the intraclass correlation coefficient (ICC). RESULTS ACD 3D U-Net achieved rapid (< 4.8 s/subject) segmentation with high DICE-SAT (median ≥ 0.994) and DICE-VAT (median ≥ 0.976), small FN (median ≤ 0.7%), and FP (median ≤ 1.1%). 3D nnU-Net yielded rapid (< 2.5 s/subject) segmentation with similar DICE-SAT (median ≥ 0.992), DICE-VAT (median ≥ 0.979), FN (median ≤ 1.1%) and FP (median ≤ 1.2%). Both models yielded excellent agreement in SAT/VAT volume versus reference measurements (ICC > 0.997) in longitudinal analysis. DISCUSSION ACD 3D U-Net and 3D nnU-Net can be automated tools to quantify abdominal SAT/VAT volume rapidly, accurately, and longitudinally in adults with overweight/obesity.
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Affiliation(s)
- Sevgi Gokce Kafali
- Department of Radiological Sciences, University of California, 300 UCLA Medical Plaza, Suite B119, Los Angeles, CA, 90095, USA
- Department of Bioengineering, University of California, Los Angeles, CA, USA
| | - Shu-Fu Shih
- Department of Radiological Sciences, University of California, 300 UCLA Medical Plaza, Suite B119, Los Angeles, CA, 90095, USA
- Department of Bioengineering, University of California, Los Angeles, CA, USA
| | - Xinzhou Li
- Department of Radiological Sciences, University of California, 300 UCLA Medical Plaza, Suite B119, Los Angeles, CA, 90095, USA
| | - Grace Hyun J Kim
- Department of Radiological Sciences, University of California, 300 UCLA Medical Plaza, Suite B119, Los Angeles, CA, 90095, USA
| | - Tristan Kelly
- Department of Physiological Science, University of California, Los Angeles, CA, USA
| | - Shilpy Chowdhury
- Department of Radiology, Loma Linda University Medical Center, Loma Linda, CA, USA
| | - Spencer Loong
- Department of Psychology, Loma Linda University School of Behavioral Health, Loma Linda, CA, USA
| | - Jeremy Moretz
- Department of Neuroradiology, Loma Linda University Medical Center, Loma Linda, CA, USA
| | - Samuel R Barnes
- Department of Radiology, Loma Linda University Medical Center, Loma Linda, CA, USA
| | - Zhaoping Li
- Department of Medicine, University of California, Los Angeles, CA, USA
| | - Holden H Wu
- Department of Radiological Sciences, University of California, 300 UCLA Medical Plaza, Suite B119, Los Angeles, CA, 90095, USA.
- Department of Bioengineering, University of California, Los Angeles, CA, USA.
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Davis KM, Petersen KS, Matthan NR, Legro RS, Kris‐Etherton PM. Effect of Incorporating 1 Avocado per Day Versus Habitual Diet on Vascular Function in Adults With Abdominal Obesity: An Ancillary Study of HAT, a Randomized Controlled Trial. J Am Heart Assoc 2024; 13:e030497. [PMID: 38726886 PMCID: PMC11179816 DOI: 10.1161/jaha.123.030497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Accepted: 03/05/2024] [Indexed: 05/22/2024]
Abstract
BACKGROUND Abdominal obesity is associated with endothelial dysfunction and poorer vascular health. Avocado consumption improves postprandial endothelial function; however, the longer-term effects remain unclear. It was hypothesized that the daily addition of 1 avocado to a habitual diet for 6 months would improve flow-mediated dilation (FMD) and carotid-femoral pulse wave velocity in individuals with abdominal obesity (waist circumference ≥35 in for women, ≥40 in for men), compared with a habitual diet low in avocados. METHODS AND RESULTS HAT (Habitual Diet and Avocado Trial) was a multicenter, randomized, controlled, parallel-arm study that investigated the health effects of adding 1 avocado per day to a habitual diet in individuals with abdominal obesity. At the Pennsylvania State University, University Park study center (n=134; age, 50 ± 13 years; women, 78%; body mass index, 32.6 ± 4.8 kg/m2), markers of vascular function were measured, including endothelial function, assessed via brachial artery flow-mediated dilation, and arterial stiffness, assessed via carotid-femoral pulse wave velocity. Between-group differences in 6-month change in flow-mediated dilation and carotid-femoral pulse wave velocity were assessed using independent t tests. Prespecified subgroup analyses were conducted using linear regression. No significant between-group differences in flow-mediated dilation (mean difference=-0.62% [95% CI, -1.70 to 0.46]) or carotid-femoral pulse wave velocity (0.25 m/s [95% CI, -0.13 to 0.63]) were observed. Results of the subgroup analyses were consistent with the primary analyses. CONCLUSIONS Longer-term consumption of 1 avocado per day as part of a habitual diet did not improve measures of vascular function compared with a habitual diet low in avocados in individuals with abdominal obesity. REGISTRATION URL: https://www.clinicaltrials.gov; Unique identifier: NCT03528031.
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Affiliation(s)
- Kristin M. Davis
- Department of Nutritional SciencesPennsylvania State UniversityUniversity ParkPAUSA
- Department of PsychologyWayne State UniversityDetroitMIUSA
| | - Kristina S. Petersen
- Department of Nutritional SciencesPennsylvania State UniversityUniversity ParkPAUSA
| | - Nirupa R. Matthan
- Jean Mayer USDA Human Nutrition Center on AgingTufts UniversityBostonMAUSA
| | - Richard S. Legro
- Department of Obstetrics and GynecologyPennsylvania State UniversityHersheyPAUSA
- Department of Public Health SciencesPennsylvania State UniversityHersheyPAUSA
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Allen TS, Doede AL, King CM, Pacheco LS, Talavera GA, Denenberg JO, Eastman AS, Criqui MH, Allison MA. Nutritional Avocado Intervention Improves Physical Activity Measures in Hispanic/Latino Families: A Cluster RCT. AJPM FOCUS 2023; 2:100145. [PMID: 37941823 PMCID: PMC10628653 DOI: 10.1016/j.focus.2023.100145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/10/2023]
Abstract
Introduction Nutrition and physical activity are key components for the prevention of cardiovascular disease. There remains a paucity of trial data on the effect of specific nutritional interventions on physical activity and sedentary time. One question is how a common nutrient-dense food such as avocado may impact physical activity and sedentary time in Hispanic/Latino families, a group that reports the lowest levels of physical activity. Design This is a 6-month clustered RCT. Setting/participants Seventy-two families (235 individuals) who identified as Hispanic/Latino were enrolled through the San Ysidro Health Center (San Diego, CA) between April 2017 and June 2018. Intervention After a 2-week run-in period, 35 families were randomized to the intervention arm (14 avocados/family/week), and 37 families were assigned to the control arm (3 avocados/family/week). Main outcome measures Linear mixed-effects models were used to assess changes in physical activity (MET minutes per week) between the groups during the 6-month trial. Secondary outcomes included sedentary time (minutes/week), BMI, and systolic and diastolic blood pressures. Results An adherence goal of >80% was achieved for both arms. Total mean physical activity increased by 2,197 MET minutes per week more in the intervention group (p<0.01) than in the control group, driven by between-group differences in moderate (p<0.01) versus vigorous (p=0.06) physical activity. After accounting for longitudinal repeated measures per participant and nested family effects, total adult physical activity remained significantly higher in the intervention than in the control group (+1,163 MET minutes per week on average per participant), with a significant intervention interaction term (p<0.01). There were no significant changes in sedentary time, BMI, or blood pressure. Conclusions Higher allocation of avocados was associated with significantly higher physical activity and no adverse changes in BMI or blood pressure, suggesting that this nutritional intervention may have beneficial pleiotropic effects.Trial registration: This study is registered at www.clinicaltrials.gov as NCT02903433.
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Affiliation(s)
- Tara Shrout Allen
- Division of Preventive Medicine, Department of Family Medicine, University of California, San Diego, La Jolla, California
| | - Aubrey L. Doede
- Division of Preventive Medicine, Department of Family Medicine, University of California, San Diego, La Jolla, California
| | - Colin M.B. King
- School of Public Health, University of California, San Diego, La Jolla, California
| | - Lorena S. Pacheco
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, Massachusetts
| | | | - Julie O. Denenberg
- Department of Family Medicine, University of California, San Diego, La Jolla, California
| | - Amelia S. Eastman
- Department of Family Medicine, University of California, San Diego, La Jolla, California
| | - Michael H. Criqui
- Department of Family Medicine, University of California, San Diego, La Jolla, California
- Division of Cardiovascular Medicine, Department of Medicine, University of California, San Diego, La Jolla, California
| | - Matthew A. Allison
- Department of Family Medicine, University of California, San Diego, La Jolla, California
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Rigsby RK, Barnes S, Sabaté J, Oyoyo U, Chowdhury S, Peters EM. Correlation of spinal epidural fat volume with body mass index: a longitudinal study. Clin Imaging 2023; 98:61-66. [PMID: 37004496 DOI: 10.1016/j.clinimag.2023.03.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 03/05/2023] [Accepted: 03/21/2023] [Indexed: 03/29/2023]
Abstract
PURPOSE Spinal epidural lipomatosis is abnormal accumulation of normal fat in the epidural space with weight loss suggested as first-line therapy in select symptomatic patients. However, moderate to large longitudinal studies establishing concordant changes between body mass index and epidural fat are lacking. The purpose of this study was to longitudinally assess this relationship. METHODS We performed an ancillary study of the Habitual Diet and Avocado Trial. Baseline and six-month abdominal MRIs were analyzed for 98 overweight or obese but otherwise healthy subjects. Dorsal epidural fat volumes in the lumbar spine were measured and correlated with changes in body mass index, changes in visceral fat volume, and demographic information. RESULTS There was a linear relationship between body mass index changes and epidural fat volume changes with a one-point change in body mass index corresponding to a 45 mm3 change in dorsal epidural fat volume (p < 0.001, 95% CI 31.87 to 76.77) as well as between visceral fat volume changes and epidural fat volume changes (regression coefficient 0.51, p < 0.001, 95% CI 0.22 to 0.47). Age was inversely related with subjects older than 45.7 years tending to lose epidural fat (regression coefficient -0.22, p = 0.025, 95% CI -10.43 to -0.72). CONCLUSION Changes in spinal dorsal epidural fat volume parallel changes in body mass index and visceral fat, supporting weight loss as initial treatment for uncomplicated obesity-associated spinal epidural lipomatosis.
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Lichtenstein AH, Kris‐Etherton PM, Petersen KS, Matthan NR, Barnes S, Vitolins MZ, Li Z, Sabaté J, Rajaram S, Chowdhury S, Davis KM, Galluccio J, Gilhooly CH, Legro RS, Li J, Lovato L, Perdue LH, Petty G, Rasmussen AM, Segovia‐Siapco G, Sirirat R, Sun A, Reboussin DM. Effect of Incorporating 1 Avocado Per Day Versus Habitual Diet on Visceral Adiposity: A Randomized Trial. J Am Heart Assoc 2022; 11:e025657. [PMID: 35861827 PMCID: PMC9707833 DOI: 10.1161/jaha.122.025657] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background
Excess visceral adiposity is associated with increased risk of cardiometabolic disorders. Short‐term well‐controlled clinical trials suggest that regular avocado consumption favorably affects body weight, visceral adiposity, and satiety.
Methods and Results
The HAT Trial (Habitual Diet and Avocado Trial) was a multicenter, randomized, controlled parallel‐arm trial designed to test whether consuming 1 large avocado per day for 6 months in a diverse group of free‐living individuals (N=1008) with an elevated waist circumference compared with a habitual diet would decrease visceral adiposity as measured by magnetic resonance imaging. Secondary and additional end points related to risk factors associated with cardiometabolic disorders were assessed. The primary outcome, change in visceral adipose tissue volume during the intervention period, was not significantly different between the Avocado Supplemented and Habitual Diet Groups (estimated mean difference (0.017 L [−0.024 L, 0.058 L],
P
=0.405). No significant group differences were observed for the secondary outcomes of hepatic fat fraction, hsCRP (high‐sensitivity C‐reactive protein), and components of the metabolic syndrome. Of the additional outcome measures, modest but nominally significant reductions in total and low‐density lipoprotein cholesterol were observed in the Avocado Supplemented compared with the Habitual Diet Group. Changes in the other additional and post hoc measures (body weight, body mass index, insulin, very low‐density lipoprotein concentrations, and total cholesterol:high‐density lipoprotein cholesterol ratio) were similar between the 2 groups.
Conclusions
Addition of 1 avocado per day to the habitual diet for 6 months in free‐living individuals with elevated waist circumference did not reduce visceral adipose tissue volume and had minimal effect on risk factors associated with cardiometabolic disorders.
Registration
URL:
https://clinicaltrials.gov
; Unique identifier: NCT03528031.
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Affiliation(s)
| | | | | | | | - Samuel Barnes
- Department of Radiology Loma Linda University School of Medicine Loma Linda CA
| | - Mara Z. Vitolins
- Department of Epidemiology and Prevention Wake Forest University School of Medicine Winston‐Salem NC
| | - Zhaoping Li
- Center for Human Nutrition David Geffen School of Medicine at UCLA Los Angeles CA
| | - Joan Sabaté
- Healthy Lifestyles, and Disease Prevention Loma Linda University School of Public Health Center for Nutrition Loma Linda CA
| | - Sujatha Rajaram
- Healthy Lifestyles, and Disease Prevention Loma Linda University School of Public Health Center for Nutrition Loma Linda CA
| | - Shilpy Chowdhury
- Department of Radiology Loma Linda University School of Medicine Loma Linda CA
| | - Kristin M. Davis
- Department of Behavioral Health Pennsylvania State University State College PA
| | - Jean Galluccio
- JM USDA Human Nutrition Center on Aging, Tufts University Boston MA
| | | | | | - Jason Li
- Center for Human Nutrition David Geffen School of Medicine at UCLA Los Angeles CA
| | - Laura Lovato
- Department of Biostatistics Wake Forest University School of Medicine Winston‐Salem NC
| | - Letitia H. Perdue
- Department of Biostatistics Wake Forest University School of Medicine Winston‐Salem NC
| | - Gayle Petty
- JM USDA Human Nutrition Center on Aging, Tufts University Boston MA
| | - Anna M. Rasmussen
- Center for Human Nutrition David Geffen School of Medicine at UCLA Los Angeles CA
| | - Gina Segovia‐Siapco
- Healthy Lifestyles, and Disease Prevention Loma Linda University School of Public Health Center for Nutrition Loma Linda CA
| | - Rawiwan Sirirat
- Healthy Lifestyles, and Disease Prevention Loma Linda University School of Public Health Center for Nutrition Loma Linda CA
| | - April Sun
- Center for Human Nutrition David Geffen School of Medicine at UCLA Los Angeles CA
| | - David M. Reboussin
- Department of Biostatistics Wake Forest University School of Medicine Winston‐Salem NC
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