Congestive heart failure (CHF) is a disease in which the heart cannot pump enough blood to properly supply the body with oxygen and nutrients.
The main symptom is the inability to be physically active, which makes the disease quite debilitating. In most developed countries, one senior out of every 10 or 20 suffers from CHF. It cannot be cured (but can and does get worse with time), so the treatment is focused on mitigating the symptoms.
CHF patients have to take various medications, monitor their weight, exercise appropriately, watch what they eat and drink, and make other changes to their lifestyle. All this makes CHF management very difficult, and to make matters worse, each patient is different and may have to manage the disease differently.