Thyroid Abnormalities in Heart Failure Anabolic Deficiencies in Heart Failure: Ready for Prime Time? The Gut Axis Involvement in Heart Failure: Focus on Trimethylamine N-oxide Chronic Obstructive Pulmonary Disease and Heart Failure: A Breathless Conspiracy Sleep Breathing Disorders in Heart Failure When Pulmonary Hypertension Complicates Heart Failure Cardiac Cachexia Revisited: The Role of Wasting in Heart Failure The Impact of Obesity in Heart Failure The Cardiorenal Syndrome in Heart Failure Hypertension and Heart Failure: Prevention, Targets, and Treatment Atrial Fibrillation in Heart Failure: Focus on Antithrombotic Management Sex and Gender-Related Issues in Heart Failure Psychological Disorders in Heart Failure