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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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Levels of Health Promotion and Illness Prevention01:26

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

Connor Snow1, Sophie Berghmans1, Quinn Smith1

  • 1University of Calgary, Cumming School of Medicine, Calgary, AB, Canada.

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

Poor sleep and physical inactivity increase dementia risk. Aerobic exercise improves sleep quality, cognition, and brain health in older adults, potentially reducing Alzheimer

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Area of Science:

  • Neuroscience
  • Gerontology
  • Sleep Science

Background:

  • Alzheimer disease (AD) and related dementias (ADRD) pose significant global health and economic challenges.
  • Physical inactivity and poor sleep are key modifiable risk factors for ADRD, with potential to reduce dementia prevalence by up to 40% if addressed.
  • Poor sleep is linked to a 1.6-fold increased risk of developing AD, highlighting the need to understand sleep's role in brain health.

Purpose of the Study:

  • To investigate the association between poor sleep and impaired cognition in older adults.
  • To examine the beneficial effects of aerobic exercise on sleep quality and cognitive function in individuals at increased risk of ADRD.
  • To explore the inter-relationship between exercise, sleep, and cognition in aging populations.

Main Methods:

  • Utilized data from two cohorts: BIM-I (prospective study of sedentary older adults) and BIM-II (randomized controlled trial of aerobic exercise).
  • Assessed sleep using in-home polysomnography, cardiorespiratory fitness via VO2peak, and cognitive function through composite scores and domain-specific tests.
  • Longitudinal assessments over 5-7 years in BIM-I and intervention effects in BIM-II provided comprehensive data.

Main Results:

  • Older adults exhibit reduced deep sleep, increased transitional sleep, and more wakefulness compared to younger adults.
  • Observed sex differences in sleep patterns and the impact of exercise on sleep.
  • Aerobic exercise demonstrated superior efficacy over stretch and tone exercises in enhancing sleep quality, cognitive function, and cerebrovascular health.

Conclusions:

  • Novel data from BIM-I and BIM-II support age-related declines in sleep architecture and demonstrate sleep improvement with aerobic exercise.
  • Findings reveal a complex interplay between sleep, exercise, and cognition in older adults at risk for ADRD.
  • These results advance understanding of how lifestyle modifications, particularly exercise and improved sleep, can maintain brain and cognitive health during aging, offering relevance for ADRD prevention.