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Related Concept Videos

Primary Healthcare Services01:30

Primary Healthcare Services

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Primary care promotes wellness and prevents disease. This care includes health promotion, education, protection (such as immunizations), early disease screening, and environmental considerations. Settings providing this type of healthcare include physician offices, public health clinics, school nursing, and community health nursing.
In 1978, international leaders convened in Alma-Ata, Kazakhstan, for what would be a pivotal event in global health. The Alma-Ata Declaration was the first to call...
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Levels of Health Promotion and Illness Prevention01:26

Levels of Health Promotion and Illness Prevention

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Health promotion allows a person to control the determinants of health, resulting in an improved health status. It enhances the quality of life and reduces premature deaths. Health promotion and illness prevention programs help people make beneficial choices to reduce the risk of disease and disabilities. There are three health promotion and illness prevention levels: primary, secondary, and tertiary prevention.
In primary prevention, actions taken before disease onset prevent the disease from...
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Preventive Healthcare Services01:30

Preventive Healthcare Services

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Preventive healthcare services keep people healthy via frequent check-ups, screening, and counseling. They primarily aid in disease prevention rather than treating an acute or chronic illness. Preventive treatment also keeps individuals productive and energetic, allowing them to work well into their retirement years. Examples of preventive care services include:
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Principles of Disease Surveillance01:26

Principles of Disease Surveillance

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Disease surveillance is the systematic collection, analysis, and interpretation of health data essential to the planning, implementation, and evaluation of public health practice. This process integrates data dissemination to entities responsible for preventing and controlling disease, injury, and disability. Surveillance systems provide crucial information for action, helping public health authorities make informed decisions to manage and prevent outbreaks, ensure public safety, optimize...
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Healthcare Agencies II01:17

Healthcare Agencies II

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There are various healthcare agencies in the United States—some of which are managed by religious institutions and others by different government branches.
Parish nursing is a growing specialty nursing profession that focuses on holistic healthcare, health promotion, and illness prevention. It blends professional nursing practice with a health ministry, focusing on health and healing within the context of a Christian community. Parish nurses serve as health educators, referral sources,...
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Methods Of Healthcare Delivery System01:26

Methods Of Healthcare Delivery System

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At the different levels of the healthcare system, we see varying methods of healthcare used. These methods include managed care systems, case management, and primary healthcare.
Managed Care System:
The managed care system is designed to control the cost while maintaining the quality of care. The patient's care from admission to discharge is planned by the primary care provider or the case manager, also known as the gatekeeper. In a managed care system, the number of care providers is...
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Public Health.

Jiahui Dai1, Toubby Chau2, María M M Corrada3

  • 1Joe C. Wen School of Population & Public Health, Henry and Susan Samueli College of Health Sciences, University of California, Irvine, Irvine, CA, USA.

Alzheimer'S & Dementia : the Journal of the Alzheimer'S Association
|December 23, 2025
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Summary
This summary is machine-generated.

Young-onset dementia (YOD) disproportionately affects racial/ethnic minorities, with higher prevalence observed in Black, American Indian/Alaska Native, and Hispanic populations. Conditions like traumatic brain injury and cardiovascular disease are strongly linked to YOD.

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Area of Science:

  • Gerontology
  • Public Health
  • Neurology

Background:

  • Young-onset dementia (YOD) before age 65 presents unique challenges.
  • Prevalence and comorbidities of YOD across U.S. racial/ethnic groups are not well-understood.

Purpose of the Study:

  • To estimate YOD prevalence in Medicare beneficiaries.
  • To examine associations between comorbidities and YOD across racial/ethnic groups.

Main Methods:

  • Cross-sectional study of Medicare beneficiaries aged 45-64 in 2022.
  • Utilized Medicare Beneficiary Summary File (MBSF) data for race/ethnicity and comorbidity information.
  • Identified YOD using Alzheimer's disease and related dementias (ADRD) indicators.

Main Results:

  • YOD prevalence was 3.27% (71,092/2,189,231) in beneficiaries aged 45-64.
  • Black adults had the highest age-adjusted YOD prevalence (3.76%).
  • YOD was 2-3 times higher in Black, AI/AN, and Hispanic individuals compared to White and Asian individuals.

Conclusions:

  • Racial/ethnic minority Medicare beneficiaries face a higher YOD burden.
  • Accurate YOD diagnosis and coordinated care are crucial for younger beneficiaries with comorbidities.