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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.
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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.
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Preventive Healthcare Services01:30

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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

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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.
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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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Related Experiment Video

Updated: Jan 8, 2026

Determining Soil-transmitted Helminth Infection Status and Physical Fitness of School-aged Children
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Public Health.

Dejia Yin1, Jiafeng Wang2,3,4, Chunyan Li2

  • 1Weifang People's Hospital, Shandong Second Medical University, Weifang, Shandong, Weifang, Shandong, China.

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

Reduced visibility of deep medullary veins (DMVs) is linked to mild cognitive impairment (MCI) and Alzheimer

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Area of Science:

  • Neuroimaging
  • Neurology
  • Gerontology

Background:

  • Deep medullary veins (DMVs) are crucial for white matter perfusion.
  • Discontinuation of DMVs may contribute to cerebral small vessel disease.
  • DMV abnormalities are increasingly linked to cognitive impairment.

Purpose of the Study:

  • To investigate the association between DMV score and cognitive function in older adults.
  • To explore the relationship between DMV score and blood biomarkers of brain aging.

Main Methods:

  • Cross-sectional study of 1206 dementia-free adults (≥60 years).
  • DMV visibility assessed using SWI sequence, with a total score calculated from six brain segments.
  • Cognitive function evaluated using a neuropsychological test battery; Petersen's criteria defined MCI.

Main Results:

  • Higher DMV scores (indicating lower visibility) were associated with increased likelihood of MCI and amnestic MCI (aMCI).
  • Elevated DMV scores correlated with poorer performance in global cognition, memory, verbal fluency, attention, and executive function.
  • In a subsample, higher DMV scores were linked to a lower amyloid-β42/amyloid-β40 ratio, suggesting a connection to Alzheimer's pathology.

Conclusions:

  • Reduced DMV visibility is associated with MCI and aMCI in older adults.
  • Poor DMV visualization correlates with impaired cognitive function across multiple domains.
  • Findings suggest a link between DMV abnormalities, cognitive decline, and Alzheimer's pathology in this population.