Could vitamin D supplements be a new therapy for heart failure? Possible pathogenic mechanisms from data of...

Area of Science:

• Cardiology
• Endocrinology
• Nutritional Science

Background:

• Vitamin D deficiency is prevalent in patients with chronic heart failure (HF).
• Low vitamin D levels are associated with adverse outcomes in HF, particularly in the elderly, obese, and individuals with darker skin.
• Experimental data in mice show vitamin D receptor deficiency leads to myocardial hypertrophy and dysfunction.

Purpose of the Study:

• To investigate the role of vitamin D deficiency in the pathogenesis of chronic heart failure (HF).
• To determine if vitamin D supplementation improves survival in patients with chronic HF.

Main Methods:

• Review of epidemiological data linking vitamin D levels to HF outcomes.
• Analysis of experimental studies on vitamin D receptor knockout mice.
• Assessment of existing interventional studies on vitamin D supplementation in HF.

Main Results:

• Vitamin D deficiency is common in HF patients and associated with adverse outcomes.
• Experimental models support a role for vitamin D in myocardial health.
• Data from interventional studies are limited and conflicting.

Conclusions:

• Vitamin D deficiency may contribute to heart failure development and progression.
• The efficacy of vitamin D supplementation for improving survival in chronic HF remains uncertain.
• Further rigorous research, including interventional trials, is essential to clarify the role of vitamin D in HF management.