Dietary Micronutrient Intake and Micronutrient Status in Patients With Chronic Stable Heart Failure: An Observational...

Area of Science:

• Cardiology
• Nutritional Science
• Clinical Medicine

Background:

• Observational studies indicate a link between reduced micronutrient status and adverse prognosis in heart failure patients.
• Reduced dietary intake of micronutrients is a potential mechanism for this deficiency in heart failure.
• Micronutrient deficiencies may contribute to the progression and severity of heart failure.

Purpose of the Study:

• To evaluate the dietary intake of micronutrients in heart failure patients.
• To assess the blood micronutrient status in individuals with heart failure.
• To identify common deficiencies, particularly vitamin D, in this population.

Main Methods:

• Dietary intake assessed using a validated food frequency questionnaire in 79 outpatients with chronic stable heart failure.
• Micronutrient blood concentrations, including vitamin D, measured from fasting blood samples.
• Analysis focused on comparing intake and status against established reference nutrient intakes.

Main Results:

• Over 20% of patients had intakes below recommended levels for multiple micronutrients, including riboflavin, vitamin D, vitamin A, calcium, magnesium, potassium, zinc, copper, selenium, and iodine.
• Vitamin D deficiency (plasma 25-hydroxy-vitamin D <50 nmol/L) was prevalent, affecting 75.6% of patients.
• Inadequate intake was also noted for several other key micronutrients, suggesting widespread nutritional concerns.

Conclusions:

• Vitamin D deficiency is highly common in patients with heart failure.
• A significant proportion of heart failure patients exhibit insufficient dietary intake of vitamin D and other essential micronutrients.
• These findings highlight the need for nutritional assessment and intervention in heart failure management.