Benefits

Intermittent Fasting and Heart Health: What the Research Shows

Discover how intermittent fasting can improve cardiovascular health. Learn about the effects on blood pressure, cholesterol, and heart disease risk factors.

12 min readUpdated January 2, 2026

Cardiovascular disease remains the leading cause of death worldwide. Emerging research suggests intermittent fasting may offer significant benefits for heart health by improving multiple risk factors simultaneously.

How Fasting Benefits Your Heart

Intermittent fasting improves heart health through several mechanisms: reducing inflammation, improving blood lipid profiles, lowering blood pressure, and promoting healthy body weight.

Blood Pressure Improvements

Studies show intermittent fasting can reduce systolic blood pressure by 3-8 mmHg in people with elevated levels. This reduction occurs through weight loss, reduced sodium intake, and improved vascular function.

Cholesterol and Lipid Benefits

  • LDL ('bad') cholesterol reductions of 10-25%
  • Triglyceride reductions of 15-30%
  • Improved HDL ('good') cholesterol in some studies
  • Better overall cholesterol ratios
Research HighlightA study in the American Journal of Clinical Nutrition found that alternate-day fasting reduced LDL cholesterol by 25% and triglycerides by 32% over 8 weeks.

Reduced Inflammation

Chronic inflammation is a major driver of heart disease. Intermittent fasting has been shown to reduce inflammatory markers like CRP, IL-6, and TNF-alpha, potentially protecting blood vessels from damage.

Who Should Be Cautious

  • People with existing heart conditions should consult their doctor
  • Those on blood pressure medications may need dose adjustments
  • People taking heart medications should be monitored
  • Anyone with a history of arrhythmias should proceed carefully
Medical DisclaimerIf you have any heart condition or take cardiovascular medications, consult your healthcare provider before starting intermittent fasting.

Related Topics

intermittent fasting heart healthfasting cardiovascularIF blood pressurefasting cholesterolheart disease fasting

Medical Disclaimer: This article is for informational purposes only and is not a substitute for professional medical advice. Always consult with a qualified healthcare provider before starting any fasting regimen.

Ready to Start Intermittent Fasting?

Get our complete beginner's guide and start your fasting journey today.