Alexandra Cowan

ORCID: 0000-0003-2544-2676
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About
Contact & Profiles
Research Areas
  • Nutritional Studies and Diet
  • Obesity, Physical Activity, Diet
  • Consumer Attitudes and Food Labeling
  • Food Security and Health in Diverse Populations
  • Diet and metabolism studies
  • Nutrition and Health in Aging
  • Child Nutrition and Water Access
  • Vitamin D Research Studies
  • Folate and B Vitamins Research
  • Advanced Chemical Sensor Technologies
  • Culinary Culture and Tourism
  • Sodium Intake and Health
  • Diet, Metabolism, and Disease
  • Iron Metabolism and Disorders
  • Health and Lifestyle Studies
  • Healthcare Systems and Practices
  • Chronic Myeloid Leukemia Treatments
  • Eating Disorders and Behaviors
  • Magnesium in Health and Disease
  • Bone health and osteoporosis research
  • HIV-related health complications and treatments
  • Amyloidosis: Diagnosis, Treatment, Outcomes
  • Anomaly Detection Techniques and Applications
  • Hepatitis C virus research
  • Advanced Malware Detection Techniques

Texas A&M University System
2023-2025

Texas A&M University
2022-2024

Center for Advancing Health
2022-2024

Purdue University West Lafayette
2017-2022

State Street (United States)
2018-2019

Fairfield University
2017-2018

Queen's University Belfast
2017

Memorial Sloan Kettering Cancer Center
2015

Lockheed Martin (Canada)
2009

North Carolina Department of Environmental Quality
1991

High intake of added sugars is associated with excess energy and poorer diet quality. The objective this cross-sectional study (n = 16,806) was to estimate usual intakes the primary food sources across range (i.e., deciles) among U.S. children (2–8 years), adolescents teens (9–18 adults (≥19 years) using National Health Nutrition Examination (NHANES) data from 2009–2012. percent contributed by 14.3 ± 0.2% 16.2 13.1 suggesting highest are teens. However, foods/beverages that contribute were...

10.3390/nu10010102 article EN Nutrients 2018-01-17

The objective of this study was to estimate the prevalence use and types dietary supplements (DS) used by U.S. adults (≥19 years) sociodemographic characteristics: family income-to-poverty ratio (PIR), food security status, Supplemental Nutrition Assistance Program (SNAP) participation using NHANES 2011⁻2014 data (n = 11,024). DS ascertained via a home inventory retrospective 30-day questionnaire. Demographic socioeconomic differences related were evaluated univariate t statistic. Half (52%)...

10.3390/nu10081114 article EN Nutrients 2018-08-17

Food insecurity is associated with poorer nutrient intakes from food sources and lower dietary supplement use. However, its association total usual intakes, inclusive of supplements, biomarkers nutritional status among US children remains unknown.The objective was to assess Healthy Eating Index-2015 (HEI-2015) scores, by security status, sex, age children.Cross-sectional data 9147 aged 1-18 y the 2011-2016 NHANES were analyzed. Usual energy HEI-2015 scores estimated using National Cancer...

10.1093/ajcn/nqab113 article EN publisher-specific-oa American Journal of Clinical Nutrition 2021-03-19

This study examined total usual micronutrient intakes from foods, beverages, and dietary supplements (DS) compared to the Dietary Reference Intakes among U.S. adults (≥19 years) by sex food security status using NHANES 2011–2014 data (n = 9954). DS were collected via an in-home interview; NCI method was used estimate distributions of two 24 h recalls for after which added. Food categorized USDA Household Security Survey Module. Adults living in insecure households had a higher prevalence...

10.3390/nu12010038 article EN Nutrients 2019-12-22

Given the current prevalence of both cigarette use and obesity in United States, identification dietary patterns that reduce mortality risk are important public health priorities. The objective present study was to evaluate correlation between energy density, a marker for diet quality, population smokers, former never smokers.Data from nationally representative sample 5293 adults who participated 2013-2014 National Health Nutrition Examination Surveys (NHANES) were analyzed. Specific survey...

10.1186/s12889-018-5248-5 article EN cc-by BMC Public Health 2018-04-04

Background/Objectives: Eggs, a nutritious and affordable food, are not widely consumed by adolescents, who show many nutrient inadequacies. Modeling dietary substitutions with eggs their costs can provide insights while considering economic constraints. This study theoretically modeled the impact of substituting an egg for another protein source, quality cost, using exemplary menus application to adolescents. Methods: The substitution was in four different seven-day menus: (1) Healthy...

10.3390/nu17071129 article EN Nutrients 2025-03-24

This analysis characterizes use of dietary supplements (DS) and motivations for DS among U.S. children (≤18 years) by family income level, food security status, federal nutrition assistance program participation using the 2011–2014 National Health Nutrition Examination Survey data. About one-third (32%) used DS, mostly multivitamin-minerals (MVM; 24%). MVM were associated with higher household level. was lowest in households participating Supplemental Assistance Program (SNAP; 20%) those...

10.3390/nu10091212 article EN Nutrients 2018-09-01

Snacks, while widely consumed in the United States (U.S.), do not have a standard definition, complicating research to understand associations, if any, with weight status. Therefore, purpose of this study was examine association between snacking frequency and status using various definitions that exist scientific literature among U.S. adults (NHANES 2013-2016; ≥20y n = 9,711). Four event-based were operationalized including participant-defined snacks, eating events outside meals,...

10.1371/journal.pone.0234355 article EN cc-by PLoS ONE 2020-06-17

The arms race between the distributors of malware and those seeking to provide defenses has so far favored former. Signature detection methods have been unable cope with onslaught new binaries aided by rapidly developing obfuscation techniques. Recent research focused on analysis low-level opcodes, both static dynamic, as a way detect malware. Although sometimes successful at detecting malware, still fails unravel obfuscated code, whereas dynamic can allow researchers investigate revealed...

10.1109/access.2017.2749538 article EN cc-by IEEE Access 2017-01-01

Abstract Objective: To evaluate total usual intakes and biomarkers of micronutrients, overall dietary quality related health characteristics US older adults who were overweight or obese compared with a healthy weight. Design: Cross-sectional study. Setting: Two 24-h recalls, nutritional objective subjective characteristic data analysed from the National Health Nutrition Examination Survey 2011–2014. We used Cancer Institute method to estimate distributions foods supplements for eleven...

10.1017/s1368980020000257 article EN Public Health Nutrition 2020-05-29

Nutrition is critical to HIV mortality and morbidity. Improved treatment modalities have increased life expectancy of HIV-infected individuals. More than 1 million US adults are living with HIV, but little known about their nutritional status. We aimed characterize the status those use NHANES 2003–2014. The a nationally representative, cross-sectional survey population includes household interview, medical examination, two 24-h dietary recalls; weights applied make data representative....

10.3945/cdn.117.001636 article EN cc-by-nc-nd Current Developments in Nutrition 2017-09-28

Most Americans have dietary sodium intakes that far exceed recommendations. Given the association of high with hypertension, strategies to reduce are an important public health target. Glutamates, such as monosodium glutamate, represent a potential strategy overall while preserving product palatability; therefore, this project aimed model replacement glutamates. The National Cancer Institute method was used estimate current intakes, and resulting from glutamate substitution (25%-45%) in...

10.3390/nu11112691 article EN Nutrients 2019-11-07

Sarcopenia, a progressive loss of skeletal muscle mass and strength, can begin in the 4th decade life. Protein intake predicts strength among older adults, but knowledge similar associations middle-aged adults is lacking.We aimed to assess between protein mass, characterized by appendicular lean adjusted for BMI [in kg/m2 (ALMBMI)], represented handgrip (GSMAXBMI), adults.We analyzed cross-sectional data from 1209 men 1208 women aged 40-59 y 2011-2014 NHANES. per kilogram actual body weight...

10.1093/jn/nxab288 article EN publisher-specific-oa Journal of Nutrition 2021-08-07

ObjectivesTo characterize dietary supplement use among US children, including product type, motivations, user characteristics, and trends over time with a primary focus on non-vitamin/non-mineral supplements (NVNM).Study designOverall, NVNM, vitamin and/or mineral only (VM-only) use; motivations for in were examined children (≤19 years of age) using the National Health Nutrition Examination Survey 1999-2016 data (n = 42 510).ResultsBetween 1999 2016, overall VM-only all remained relatively...

10.1016/j.jpeds.2020.12.021 article EN cc-by-nc-nd The Journal of Pediatrics 2020-12-17

Accurate and reliable methods to assess prevalence of use nutrient intakes from dietary supplements (DSs) are critical for research, clinical practice, public health monitoring. NHANES has been the primary source DS usage patterns using an in-home inventory with a frequency-based Prescription Medicine Questionnaire (DSMQ), but little is known regarding information obtained 24-h recalls (24HRs). The objectives this analysis were compare results 4 different measuring constructed two data...

10.1093/jn/nxz306 article EN publisher-specific-oa Journal of Nutrition 2019-11-21

Most dietary indices reflect foods and beverages do not include exposures from supplements (DS) that provide substantial amounts of micronutrients. A nutrient-based approach captures total intake inclusive DS can strengthen exposure assessment. We examined the construct criterion validity Total Nutrient Index (TNI) among US adults (≥19 years; nonpregnant or lactating). The TNI includes 8 underconsumed micronutrients identified by Dietary Guidelines for Americans: calcium; magnesium;...

10.1093/jn/nxab428 article EN cc-by-nc Journal of Nutrition 2021-12-17

Abstract We estimate nutrient intake from diet and total sources including dietary supplements (DS), quality of low‐income U.S. older adults (60+ years) using the 2007–2016 National Health Nutrition Examination Survey. apply Cancer Institute method to determine usual/habitual distributions. Our results reveal that have poor quality. DS use reduces risk inadequacy but is not associated with statistically significantly better Future policies would change access nutrients through should...

10.1002/aepp.13328 article EN cc-by-nc-nd Applied Economic Perspectives and Policy 2022-10-07

Food classification is critical to the analysis of nutrients comprising foods reported in dietary assessment. Advances mobile and wearable sensors, combined with new image based methods, particularly deep learning approaches, have shown great promise improve accuracy food assess intake. However, these approaches are data-hungry their performances heavily reliant on quantity quality available datasets for training model. Existing not suitable fine-grained following nutrition as they lack...

10.2352/ei.2022.34.8.image-301 article EN Electronic Imaging 2022-01-16

This pilot cross-sectional study explored differences in dietary intake and eating behaviors between healthy adults a group of taking insulin to manage diabetes.

10.3390/nu16203441 article EN Nutrients 2024-10-11
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