Keri Marshall

Dr. Keri Marshall

Private Practice, Wilmington, North Carolina, USA
orcid

Research Focus & Metrics

Academic Career Length

7Years (2020-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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8 July 2020 in PLOS ONE
Verified
Journal Article
Open access
PDF file
KMKeri Marshall
Keri Marshall
LTLynn Teo
Lynn Teo
CSChristopher Shanahan
Christopher Shanahan
LLLeeCole Legette
LeeCole Legette
SMSusan Hazels Mitmesser
Susan Hazels Mitmesser
Poverty may be a barrier to acquiring adequate nutrient levels for the prevention of osteoporosis. Age and nutritional intake are major factors that contribute to osteoporosis prevalence. This study examined the relationship between markers of poverty with calcium / vitamin D intake and osteoporosis. A cross-sectional analysis of the United States population was performed using National Health and Nutrition Examination Survey (NHANES) data from 2007–2010 and 2013–2014 for older US adults (n = 3,901 participants, 50 years old and older). Odds of inadequate calcium / vitamin D intake and dietary supplement use and risk of probable osteoporosis were calculated in order to determine the relative difference and possible associations between household income, the Family Monthly Poverty Level Index, food security, and participation in the Supplemental Nutrition Assistance Program (SNAP). A sub-analysis of ethnic disparities and biological sex was also performed. In general, women age 50 and older consistently have inadequate calcium intake, regardless of economic level including poverty. While inadequate calcium intake has a larger prevalence among women, markers of poverty increased the risk of inadequate calcium intake in all men and risk of osteoporosis among some subgroups, with the exception of SNAP program participation. Over one fourth of Non-Hispanic black men in the US are below the poverty line. Approximately half of this population has inadequate calcium (58.9%) and vitamin D (46.7%) intake. Typically, osteoporosis risk is relatively low for Non-Hispanic Black males, however considering poverty status, risk is significantly increased (Relative Risk Ratio [RR]: 2.057 ± 0.012) for those with low income suggesting that calcium and vitamin D supplementation may be of benefit for this population.

16 September 2022 in Nutrients
Verified
Journal Article
Open access
PDF file
Rachel A. MurphyRachel A. Murphy
Rachel A. Murphy
KMKeri Marshall
Keri Marshall
SZSandra Zagorin
Sandra Zagorin
PDPrasad P Devarshi
Prasad P Devarshi
SMSusan Mitmesser
Susan Mitmesser
Adequate consumption of nutrients that support infant neurodevelopment is critical among pregnant women and women of childbearing age. Understanding the potential effects of socioeconomic inequalities on nutrient gaps in these life stages is thus important for informing strategies to mitigate negative health consequences. Usual intake (foods and dietary supplements) of neurodevelopment-related nutrients was determined from 24 h recalls among women of childbearing age and pregnant women (20–44 years) using data from 2007–2018 NHANES. Usual intake was compared across household food security, poverty-to-income ratio (PIR), and household participation in federal food and nutrition assistance programs. Intake of EPA + DHA was universally low with >95% of all women (pregnant and non-pregnant) below the DGA recommendation from foods alone. Women in households that participated in the Supplemental Nutrition Assistance Program had a significantly lower intake of multiple nutrients relative to those who did not participate. For example, 50% had intakes below the estimated average requirement (EAR) for vitamin A (versus 32%), 42% were below the EAR for calcium (versus 33%) and 65% were below the EAR for magnesium (versus 42%). Similar gradients were observed by PIR and household food security, and among pregnant women whereby gaps were more evident in those experiencing socioeconomic inequalities. The use of dietary supplements attenuated shortfalls for most nutrients. These findings highlight a critical need to support the nutritional requirements for women of childbearing age and pregnant women.

10 February 2022 in Sleep Health
Verified
Journal Article
Open access
Rachel A. MurphyRachel A. Murphy
Rachel A. Murphy
PDPrasad Devarshi
Prasad Devarshi
JMJonathan G. Mun
Jonathan G. Mun
KMKeri Marshall
Keri Marshall
SMSusan Hazels Mitmesser
Susan Hazels Mitmesser
To determine associations between serum long-chain (LC) omega-3 fatty acid levels and sleep parameters among adults (N = 1314) in NHANES 2011-2012. Regression analyses accounting for the complex-survey design were used to assess associations between serum LC omega-3 fatty acid levels, sleep duration, difficulty falling sleeping and sleep disorder. Overall, 48.6% were male, the mean age was 47.2 years, 5% reported very short sleep, 29% short sleep, 63% normal sleep and 3% long sleep. The sum of LC omega-3 fatty acid levels was lower among adults with short versus normal sleep, although differences were attenuated with adjustment for sociodemographic factors. Relative to normal sleep, adults with very short sleep had lower levels of eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA) and sum of LC omega-3 fatty acids. Differences remained significant (p < .05 for all) with adjustment for sociodemographic factors. No associations were observed with difficulty falling sleeping or sleep disorder. Our results suggest that omega-3 fatty acid levels are associated with healthy sleep duration, although, interventions are needed to clarify causality.

14 December 2021 in Cancers
Verified
Journal Article
Open access
PDF file
ASAmy L. Shaver
Amy L. Shaver
TTTheresa A. Tufuor
Theresa A. Tufuor
JNJing Nie
Jing Nie
SEShauna Ekimura
Shauna Ekimura
KMKeri Marshall
Keri Marshall
KNKatia Noyes
Katia Noyes
Cancer patients are at risk for malnutrition; the aim of this study was to provide a cost-effectiveness analysis of dietary supplementation in cancer survivors. We estimated prevalence of supplementation, hospitalization rates, quality of life (QOL), cost of care and mortality among cancer survivors. We built a decision analytic model to simulate life-long costs of health care and supplementation and QOL among cancer survivors with and without supplementation. Cost of supplements was derived from national pharmacy databases including single- and multivitamin formularies. One-way and probabilistic sensitivity analysis were performed to evaluate the robustness of the incremental cost-effectiveness ratio (ICER) to changes in supplementation costs and duration. The study cohort represented the national cancer survivor population (average age 61 years, 85% white, 52% male, and 94% insured). Hospitalization rates for supplement users and non-users were 12% and 21%, respectively. The cost of hospitalization was $4030. Supplementation was associated with an additional 0.48 QALYs (10.26 vs. 9.78) at the incremental cost of $2094 ($236,933 vs. $234,839) over the remaining lifetime of survivors (on average 13 years). Adequate nutrition provides a cost-effective strategy to achieving potentially optimum health. Further studies are needed to determine the effects of specific nutrient doses and supplementation on long-term outcomes per cancer type.