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Concurrent validity of skin carotenoid status as a concentration biomarker of vegetable and fruit intake compared to multiple 24-h recalls and plasma carotenoid concentrations across one year: a cohort study.

Jahns L, Johnson LK, Conrad Z, Bukowski M, Raatz SK, Jilcott Pitts S, Wang Y, Ermakov IV, Gellermann W.

Nutr J. 2019 Nov 21;18(1):78. doi: 10.1186/s12937-019-0500-0.


Daily Protein Intake and Distribution of Daily Protein Consumed Decreases Odds for Functional Disability in Older Americans.

McGrath R, Stastny S, Casperson S, Jahns L, Roemmich J, Hackney KJ.

J Aging Health. 2019 Oct 18:898264319881864. doi: 10.1177/0898264319881864. [Epub ahead of print]


Decreasing the Consumption of Foods with Sugar Increases Their Reinforcing Value: A Potential Barrier for Dietary Behavior Change.

Flack KD, Ufholz K, Casperson S, Jahns L, Johnson L, Roemmich JN.

J Acad Nutr Diet. 2019 Jul;119(7):1099-1108. doi: 10.1016/j.jand.2018.12.016. Epub 2019 Apr 6.


Prospective Analysis of Vegetable Amount and Variety on the Risk of All-Cause and Cause-Specific Mortality among US Adults, 1999⁻2011.

Conrad Z, Thomson J, Jahns L.

Nutrients. 2018 Sep 27;10(10). pii: E1377. doi: 10.3390/nu10101377.


Recognition of Federal Dietary Guidance Icons Is Associated with Greater Diet Quality.

Jahns L, Conrad Z, Johnson LK, Raatz SK, Kranz S.

J Acad Nutr Diet. 2018 Nov;118(11):2120-2127. doi: 10.1016/j.jand.2018.05.026. Epub 2018 Aug 23.


Americans' Perceptions about Fast Food and How They Associate with Its Consumption and Obesity Risk.

Min J, Jahns L, Xue H, Kandiah J, Wang Y.

Adv Nutr. 2018 Sep 1;9(5):590-601. doi: 10.1093/advances/nmy032.


Simple and sensitive dilute-and-shoot analysis of carotenoids in human plasma.

Bukowski MR, Voeller K, Jahns L.

J Chromatogr B Analyt Technol Biomed Life Sci. 2018 Sep 15;1095:32-38. doi: 10.1016/j.jchromb.2018.07.020. Epub 2018 Jul 18.


Study design for a clinical trial to examine food price elasticity among participants in federal food assistance programs: A laboratory-based grocery store study.

Conrad Z, Jahns L, Roemmich JN.

Contemp Clin Trials Commun. 2018 May 7;10:154-160. doi: 10.1016/j.conctc.2018.05.011. eCollection 2018 Jun.


Depletion and repletion of fruit and vegetable intake alters serum bone turnover markers: a 28-week single-arm experimental feeding intervention.

Cao JJ, Whigham LD, Jahns L.

Br J Nutr. 2018 Sep;120(5):500-507. doi: 10.1017/S0007114518001642. Epub 2018 Jul 19.


Capacity of the US Food System to Accommodate Improved Diet Quality: A Biophysical Model Projecting to 2030.

Conrad Z, Johnson LK, Peters CJ, Jahns L.

Curr Dev Nutr. 2018 Jan 29;2(4):nzy007. doi: 10.1093/cdn/nzy007. eCollection 2018 Apr.


Trends in linoleic acid intake in the United States adult population: NHANES 1999-2014.

Raatz SK, Conrad Z, Jahns L.

Prostaglandins Leukot Essent Fatty Acids. 2018 Jun;133:23-28. doi: 10.1016/j.plefa.2018.04.006. Epub 2018 May 2.


Nutrient intake disparities in the US: modeling the effect of food substitutions.

Conrad Z, Johnson LK, Roemmich JN, Juan W, Jahns L.

Nutr J. 2018 May 17;17(1):53. doi: 10.1186/s12937-018-0360-z.


Relationship between food waste, diet quality, and environmental sustainability.

Conrad Z, Niles MT, Neher DA, Roy ED, Tichenor NE, Jahns L.

PLoS One. 2018 Apr 18;13(4):e0195405. doi: 10.1371/journal.pone.0195405. eCollection 2018.


The History and Future of Dietary Guidance in America.

Jahns L, Davis-Shaw W, Lichtenstein AH, Murphy SP, Conrad Z, Nielsen F.

Adv Nutr. 2018 Mar 1;9(2):136-147. doi: 10.1093/advances/nmx025. Review.


Optical assessment of skin carotenoid status as a biomarker of vegetable and fruit intake.

Ermakov IV, Ermakova M, Sharifzadeh M, Gorusupudi A, Farnsworth K, Bernstein PS, Stookey J, Evans J, Arana T, Tao-Lew L, Isman C, Clayton A, Obana A, Whigham L, Redelfs AH, Jahns L, Gellermann W.

Arch Biochem Biophys. 2018 May 15;646:46-54. doi: 10.1016/ Epub 2018 Mar 27.


A diet high in carotenoid-rich vegetables and fruits favorably impacts inflammation status by increasing plasma concentrations of IFN-α2 and decreasing MIP-1β and TNF-α in healthy individuals during a controlled feeding trial.

Jahns L, Conrad Z, Johnson LK, Whigham LD, Wu D, Claycombe-Larson KJ.

Nutr Res. 2018 Apr;52:98-104. doi: 10.1016/j.nutres.2018.02.005. Epub 2018 Feb 13.


A non-invasive assessment of skin carotenoid status through reflection spectroscopy is a feasible, reliable and potentially valid measure of fruit and vegetable consumption in a diverse community sample.

Jilcott Pitts SB, Jahns L, Wu Q, Moran NE, Bell RA, Truesdale KP, Laska MN.

Public Health Nutr. 2018 Jun;21(9):1664-1670. doi: 10.1017/S136898001700430X. Epub 2018 Feb 19.


Smokers report lower intake of key nutrients than nonsmokers, yet both fall short of meeting recommended intakes.

Raatz SK, Jahns L, Johnson LK, Scheett A, Carriquiry A, Lemieux A, Nakajima M, al'Absi M.

Nutr Res. 2017 Sep;45:30-37. doi: 10.1016/j.nutres.2017.07.010. Epub 2017 Jul 28.

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