Karen Kopera-Frye

Prof. Dr. Karen Kopera-Frye


Research Focus & Metrics

Academic Career Length

3Years (2024-Present)

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

Representative Publications

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7 November 2024 in Healthcare
Verified
Journal Article
Open access
PDF file
Sri BanerjeeSri Banerjee
Sri Banerjee
Jagdish KhubchandaniJagdish Khubchandani
Jagdish Khubchandani
Elizabeth Sara England-KennedyElizabeth Sara England-Kennedy
Elizabeth Sara England-Kennedy
Rhonda Eve McIntyreRhonda Eve McIntyre
Rhonda Eve McIntyre
KKKaren Kopera-Frye
Karen Kopera-Frye
KAVITA BatraKAVITA Batra
KAVITA Batra
Background/Objectives: Chronic Obstructive Pulmonary Disease (COPD) is a leading cause of mortality in the United States (U.S.), with rates varying by disease severity, comorbidities, and sociodemographic factors. Cognitive impairment has been independently associated with increased mortality, but has not been well studied in relation to COPD despite being a frequently overlooked comorbidity in COPD patients. The purpose of this nationwide study was to assess the relationship between low cognitive performance and the risk of mortality among older adults with COPD while adjusting for major sociodemographic and health-related characteristics. Methods: This study utilized the 1999–2002 National Health and Nutrition Examination Survey (NHANES) and the respiratory mortality data of noninstitutionalized US adults aged over 65 years. Survival curves showing the combined effect of cognitive decline and COPD using the Kaplan–Meier product-limit method to estimate the percent survival of the subject at each point in time were used. Results: The final sample included 2013 older adults, with 39.1% showing low cognitive performance and 12.7% having COPD. Those with low cognitive performance were older, less educated, had lower income, were more likely to be racial/ethnic minorities, and had a history of cardiovascular diseases (CVD); they were also more likely to have COPD or chronic kidney disease (CKD). The adjusted hazard ratio for respiratory-related mortality risk was highest for individuals with both COPD and low cognitive performance (hazards ratio = 8.53), people with COPD alone also had a higher respiratory-related mortality risk (hazards ratio = 4.92), but low cognitive performance alone did not significantly increase respiratory-related mortality risk. Conclusions: These findings provide clearer insights into how cognitive impairment affects mortality risk in older adults with COPD and we discuss potential strategies to address this dual chronic health challenge effectively.

Verified
Journal Article
Open access
PDF file
Jagdish KhubchandaniJagdish Khubchandani
Jagdish Khubchandani
Sri BanerjeeSri Banerjee
Sri Banerjee
RGRafael Gonzales-Lagos
Rafael Gonzales-Lagos
KKKaren Kopera-Frye
Karen Kopera-Frye
Purpose: Food insecurity and colorectal cancer (CRC) are widely prevalent problems in the U.S. However, the long-term effects of food insecurity among people living with CRC are not well explored (e.g., risk of mortality). Methods: Data from the U.S. National Health and Nutrition Examination Survey (years 1999–2010) were linked with mortality data from the National Death Index up to 31 December 2019. Results: A total of 30,752 adults comprised the analytic sample; 222 were living with CRC and more than a tenth were food-insecure (11.6%). In our adjusted analysis, individuals who were food insecure and had CRC were 4.13 times more likely to die of any cause and 9.57 times more likely to die of cardiovascular diseases (compared to those without CRC and food insecurity). Conclusions: Colorectal cancer is among the top cancers diagnosed in American adults and more than a tenth of adult Americans with CRC live with food insecurity. Given the higher risk of mortality with co-occurring CRC and food insecurity, collaborative healthcare models can help address food insecurity and other social needs of people with CRC, and surveillance measures for food insecurity should be widely implemented across health systems.

7 October 2024 in Nutrire
Verified
Journal Article
Open access
PDF file
Jagdish KhubchandaniJagdish Khubchandani
Jagdish Khubchandani
Sri BanerjeeSri Banerjee
Sri Banerjee
KKKaren Kopera-Frye
Karen Kopera-Frye
RGRafael Gonzales-Lagos
Rafael Gonzales-Lagos
COClaret Onukogu
Claret Onukogu
Chronic Kidney Disease (CKD) and food insecurity are widely prevalent among adult Americans, but the long term impact of food insecurity on CKD outcomes is

14 September 2025 in Brain Sciences
Verified
Journal Article
Open access
PDF file
Jagdish KhubchandaniJagdish Khubchandani
Jagdish Khubchandani
Elizabeth Sara England-KennedyElizabeth Sara England-Kennedy
Elizabeth Sara England-Kennedy
Sri BanerjeeSri Banerjee
Sri Banerjee
KKKaren Kopera-Frye
Karen Kopera-Frye
KAVITA BatraKAVITA Batra
KAVITA Batra
Background: Diabetes is a leading cause of death globally and is strongly associated with aging-related conditions, such as cognitive decline. Both diabetes and cognitive impairment share overlapping biological mechanisms, including vascular damage and insulin resistance. While each condition independently affects health outcomes, the impact of their coexistence on mortality risk among older Hispanic adults remains understudied. This study aimed to examine the impact of the combination of diabetes and low cognitive performance on mortality risk among this marginalized population. Methods: Data were drawn from 636 Hispanic adults aged 60 years and older who participated in NHANES 1999–2002, with mortality follow-up through 2019. Cox proportional hazards models were used to estimate hazard ratios (HRs) for all-cause mortality, adjusting for sociodemographic and health-related variables. Results: Among participants, 23.3% had diabetes, and 54.9% had low cognitive performance. The combination of diabetes and low cognitive performance was associated with a significantly elevated risk of all-cause mortality (HR = 2.36; 95% CI: 1.70–3.28). No statistically significant increase in mortality risk was observed for either condition alone (i.e. diabetes or cognitive impairment). Conclusions: Coexisting diabetes and cognitive impairment in older Hispanic adults were associated with more than a twofold increase in mortality risk. These findings underscore the need for culturally appropriate, interdisciplinary strategies to address the dual burden of diabetes and cognitive decline in aging minority populations.

14 May 2026 in Brain Sciences
Verified
Journal Article
Open access
PDF file
LBLiahm Blank
Liahm Blank
JKJoshua Khorsandi
Joshua Khorsandi
Elizabeth Sara England-KennedyElizabeth Sara England-Kennedy
Elizabeth Sara England-Kennedy
Sri BanerjeeSri Banerjee
Sri Banerjee
KKKaren Kopera-Frye
Karen Kopera-Frye
KAVITA BatraKAVITA Batra
KAVITA Batra
Daylight Saving Time (DST) creates abrupt, externally imposed circadian disruptions that can impair sleep regulation, hormonal balance, cognitive performance, and emotional stability. Although these effects are known in the general population, individuals with chronic mental illness, whose circadian systems are often intrinsically dysregulated, may face increased neuropsychological consequences. This comprehensive review synthesizes evidence from chronobiology, psychiatry, neuroscience, and population health to examine how DST-related circadian misalignment impacts cognitive functioning, mood regulation, suicidality risk, and symptom exacerbation across psychological disorders such as depression, anxiety disorders, bipolar disorder, post-traumatic stress disorder, attention-deficit/hyperactivity disorder, and psychotic disorders. Following the Scale for the Assessment of Narrative Review Articles (SANRA) guidelines, a search of PubMed, PsycINFO, Scopus, and Google Scholar was conducted to identify studies published from 2000–2026 examining DST, circadian rhythm disruption, neuropsychological outcomes, and chronic mental illness. Empirical, theoretical, and mechanistic studies were included to ensure comprehensive synthesis. Across conditions, DST, particularly spring forward transitions, is associated with increased sleep disturbance, impaired executive functioning, reduced attention and working memory, heightened emotional reactivity, increased depressive symptoms, elevated risk of manic episodes, and short-term increases in suicidality. Neurobiological mechanisms include altered melatonin secretion, cortisol dysregulation, Hypothalamus Pituitary Axis (HPA-axis) activation, and clock-gene desynchrony. DST may function as a modifiable negative environmental influence capable of affecting neuropsychological functioning in vulnerable populations. These findings underscore the need for clinical awareness, preventive strategies, and policy reconsiderations, including calls to eliminate seasonal time changes. Standardizing DST-related research outcomes and expanding longitudinal, multi-site studies will be essential for advancing this emerging field.