The definition of heart failure is when the heart cannot pump efficiently enough blood to circulate oxygen-rich blood throughout the body. When the heart becomes weak or when it becomes thickened and stiff, the heart muscle cannot keep up with its workload.
Signs and symptoms of heart failure include

• shortness of breath
• fatigue
• lightheadedness
• exercise intolerance
• coughing (or chronic cough)
• wheezing
• pounding or racing heart
• excessive tiredness
• loss of appetite
• nausea
• confusion
• problems thinking
• swelling in the ankles, and
• rarely, chest pain
• Symptoms are usually worse at night when lying flat.

• Risk factors

• Risk factors for heart failure include high blood pressure, prior heart attack, obesity, smoking, alcohol abuse, vitamin deficiencies, sleep apnea, heavy metal toxicity, eating an unhealthy diet (including animal fat and salt), and being sedentary.

Causes of heart failure

• The cause of heart failure is a weakened or thickened cardiac muscle. When risk factors for heart failure…