Clinical Scorecard: Impact of Ketogenic Diet, Time-Restricted Eating, and Alternate-Day Fasting on Ambulatory Blood Pressure Variations: A Sub-Analysis from a Randomized Clinical Trial

At a Glance

Key Highlights

• Modified alternate-day fasting (mADF) showed the greatest improvements in 24-hour ambulatory systolic blood pressure among hypocaloric diets.
• All studied diets (eTRE, lTRE, mADF, KD, Mediterranean control) significantly improved anthropometric parameters.
• Blood pressure reductions correlated with body fat loss, independent of age and sex.

Guideline-Based Recommendations

Diagnosis

• Use 24-hour ambulatory blood pressure monitoring (ABPM) to assess blood pressure changes in obesity-related hypertension.

Management

• Implement hypocaloric diets with varying ketogenic potential for weight loss to reduce blood pressure in obese patients.
• Consider modified alternate-day fasting as the most effective dietary approach for blood pressure improvement.
• Incorporate lifestyle modifications including sodium reduction, increased potassium intake, moderate alcohol consumption, and smoking cessation.

Monitoring & Follow-up

• Monitor blood pressure changes using 24-hour ABPM before and after dietary interventions.
• Track anthropometric parameters to assess weight and body fat changes.

Risks

• No specific risks identified related to the dietary interventions in this study; however, clinical monitoring is advised.

Patient & Prescribing Data

Adults with obesity (BMI >30 kg/m2) undergoing hypocaloric dietary interventions

Modified alternate-day fasting yields superior reductions in ambulatory systolic blood pressure compared to ketogenic diet, time-restricted eating, or Mediterranean diet controls.

Clinical Best Practices

• Employ 24-hour ABPM for accurate blood pressure assessment in dietary intervention studies.
• Focus on weight loss through hypocaloric diets to achieve clinically meaningful blood pressure reductions.
• Prioritize modified alternate-day fasting for blood pressure improvement in obese patients.
• Recognize that blood pressure improvements are linked to body fat loss rather than patient age or sex.

References

• European Society of Hypertension Guidelines
• Fu et al. Meta-analysis on low-calorie diets and blood pressure
• PREDIMED Study on Mediterranean diet and blood pressure