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Related Concept Videos

Ischemic Stroke l: Introduction01:15

Ischemic Stroke l: Introduction

Ischemic stroke is an acute cerebrovascular condition in which blood flow to a brain region is suddenly interrupted, leading to tissue infarction. Neurons depend on continuous oxygen and glucose supply, so even brief reductions in perfusion cause energy failure, ionic imbalance, and irreversible injury. Ischemic strokes are classified into thrombotic and embolic types based on their underlying mechanisms.Thrombotic MechanismsThrombotic stroke develops when a clot forms within a cerebral artery.
Ischemic Stroke ll: Pathophysiology01:15

Ischemic Stroke ll: Pathophysiology

An ischemic stroke occurs when a cerebral blood vessel becomes obstructed, most often by a thrombus or embolus, interrupting the delivery of oxygen and glucose to brain tissue. Because neurons rely on continuous aerobic metabolism, energy failure begins within minutes of reduced perfusion. The region receiving the least blood flow becomes the infarct core, an area of irreversible cellular death. Surrounding this core lies the penumbra, a zone of hypoperfused but still viable tissue that is...
Ischemic Heart Disease: Overview01:17

Ischemic Heart Disease: Overview

Ischemic heart disease occurs when the heart's blood supply dwindles, causing an ominous lack of oxygen and nutrients. This deficiency, stemming from reduced or obstructed blood flow, spells danger, leading to heart muscle damage and dysfunction.
Atherosclerosis, the primary malefactor, orchestrates this dangerous condition. It manifests as the accumulation of fatty deposits, akin to insidious plaques, within arterial walls. As time elapses, these plaques metamorphose, hardening and narrowing...
Transient Ischemic Attack l: Introduction01:26

Transient Ischemic Attack l: Introduction

A transient ischemic attack (TIA) is a brief episode of neurological dysfunction caused by a temporary, focal reduction in cerebral blood flow. Although symptoms resemble those of an ischemic stroke, the interruption in perfusion is short-lived and does not cause permanent infarction. TIAs are clinically important because they often serve as early warning events for future stroke.Mechanisms of Transient Cerebral IschemiaTransient cerebral ischemia may arise through several mechanisms. One...
Stroke: Introduction and Types01:29

Stroke: Introduction and Types

A stroke is an acute neurological event caused by the sudden disruption of cerebral blood flow, leading to rapid loss of neuronal function. Neurons depend on continuous oxygen and glucose supply, so even brief interruptions can cause irreversible injury within minutes. Strokes are classified into ischemic and hemorrhagic types.Ischemic StrokeIschemic strokes are most common and occur due to arterial occlusion, depriving brain tissue of oxygen and nutrients. This leads to energy failure, ionic...
Hemorrhagic Stroke l: Introduction01:17

Hemorrhagic Stroke l: Introduction

A hemorrhagic stroke is an acute neurological event that occurs when a weakened cerebral blood vessel ruptures, allowing blood to accumulate within or around the brain. The sudden release of blood forms a focal hematoma that increases intracranial pressure, displaces neural tissue, and can obstruct cerebrospinal fluid pathways. These effects may be compounded by intraventricular extension of the hemorrhage, cerebral edema, or compression of adjacent structures, all of which contribute to...

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Related Experiment Videos

Food Insecurity Is Associated with Increased Risk of Ischemic Stroke.

Miri Lutski1, Carmit Libruder2, Binyamin Binyaminy2

  • 1School of Nutritional Sciences, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel; Israel Center for Disease Control, Israel Ministry of Health, Ramat Gan, Israel; School of Public Health, Gray Faculty of Medical and Health Sciences, Tel Aviv University, Tel Aviv, Israel.

American Journal of Preventive Medicine
|June 8, 2026
PubMed
Summary
This summary is machine-generated.

Food insecurity increases ischemic stroke risk in older adults. Addressing food insecurity may help prevent strokes in this population.

Keywords:
Food insecurityIncidenceIschemic strokeMABATRegistry

Related Experiment Videos

Area of Science:

  • Gerontology
  • Public Health
  • Epidemiology

Background:

  • Food insecurity is linked to negative health outcomes.
  • The relationship between food insecurity and ischemic stroke in older adults is not well understood.
  • This study investigates food insecurity's impact on ischemic stroke incidence in adults aged 65+.

Purpose of the Study:

  • To examine the association between food insecurity and ischemic stroke incidence.
  • To determine if food insecurity is a risk factor for ischemic stroke in older adults.

Main Methods:

  • A cohort study utilized data from the National Health and Nutrition Survey (2005-2006) of Israeli older adults.
  • Data were linked to the Israeli National Stroke Registry (2014-2022).
  • Multivariable Fine and Gray models analyzed the association between food security status and ischemic stroke, accounting for competing risks.

Main Results:

  • The study included 1,337 participants (median age 73 years, 57.4% women).
  • Over a mean follow-up of 6.6 years, 82 ischemic stroke events occurred.
  • Food insecurity was associated with a 2.02-fold increased risk of first-recorded ischemic stroke (HR=2.02; 95% CI: 1.12-3.65), with a stronger association for first-ever strokes (HR=2.65; 95% CI: 1.33-5.29).

Conclusions:

  • Food insecurity is significantly associated with a higher risk of ischemic stroke in older adults.
  • Interventions targeting food insecurity could be a strategy for stroke prevention in elderly populations.