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Nutritional factors in stroke.

S E Gariballa1

  • 1Sheffield Institute for Studies on Ageing, University of Sheffield, Barnsley District General Hospital, UK. S.E.Gariballa@sheffield.ac.uk

The British Journal of Nutrition
|August 29, 2000
PubMed
Summary

Modifying lifestyle factors like diet and physical activity can prevent stroke. Reducing salt intake and improving nutrition may significantly lower stroke risk and mortality.

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Area of Science:

  • Neurology
  • Preventive Medicine
  • Nutritional Science

Background:

  • Lifestyle factors including diet, physical activity, and alcohol consumption are recognized as modifiable risk factors for stroke prevention.
  • Specific dietary components like sodium (Na) and homocysteine levels, along with deficiencies in folate, vitamins B6, and B12, are linked to stroke risk.
  • Other dietary elements such as fruits, vegetables, potassium (K), calcium (Ca), magnesium (Mg), fiber, fish, and milk show protective associations, while the role of fat intake remains unclear.

Purpose of the Study:

  • To review observational evidence supporting the modification of lifestyle-related risk factors for stroke prevention.
  • To examine the impact of dietary factors, physical activity, and nutritional status on stroke risk and outcomes.
  • To synthesize current understanding of the relationship between diet, lifestyle, and stroke incidence and mortality.

Main Methods:

  • Review of observational studies and intervention trials focusing on lifestyle modifications and stroke.
  • Analysis of associations between dietary intake (e.g., salt, specific nutrients), physical activity levels, and stroke risk.
  • Evaluation of evidence linking homocysteine levels, serum albumin, and nutritional status to stroke risk and patient outcomes.

Main Results:

  • Reduced salt consumption is linked to lower blood pressure and stroke mortality.
  • Adequate intake of folate, vitamins B6, B12, K, Ca, Mg, fiber, fish, and milk, alongside regular physical activity, may protect against stroke.
  • High cholesterol is a demonstrated risk factor, while the role of fat intake is uncertain. Low serum albumin and undernutrition are associated with increased stroke morbidity and mortality.

Conclusions:

  • Modifying lifestyle factors, particularly diet and physical activity, is crucial for stroke prevention.
  • Dietary interventions focusing on reduced sodium, adequate micronutrients, and balanced nutrition can mitigate stroke risk.
  • Addressing undernutrition in stroke patients may improve outcomes and reduce mortality.

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