This
 is not the case as when someone is said to have a big heart. This kind 
of 'generosity' can be dangerous to one's health and also life 
threatening.
Not
 to scare you, Cardiomegaly isn't a disease. It is a symptom of 
underlying problem(s) that is causing the heart to work harder than 
normal.
The
 heart is an organ made up of contractile muscles. Coordinated 
contractions of these muscle helps propel blood out of the atria and 
ventricles to the blood vessels, and other parts of the body.
Cardiomegaly is one of the most common types of cardiomyopathy (disease of the heart muscle).
                        CAUSES OF CARDIOMEGALY
As
 stated earlier, conditions that causes enlarged heart are conditions 
that lead to increased working and weakening of the heart muscles. These
 conditions include:
CORONARY ARTERY DISEASE 
Coronary
 arteries are the arteries that supply blood and oxygen to the heart 
itself. Build up of fatty deposits or plaques inside one or more of 
these arteries, (a condition known as atherosclerosis), can lead to 
narrowing of the arteries, and this could cause Cardiac Ischaemia 
(reduced blood flow to the heart). This reduces the oxygen supply to the
 heart, and the heart tries to pump more and harder in order to 
compensate for this.
HIGH BLOOD PRESSURE (Hypertension) 
This
 could be complementary to atherosclerosis. The heart pumps blood with 
more force than usual through the arteries, which puts strain on the 
heart.
For more on hypertension, read HERE to learn how to deal with hypertension.
MYOCARDITIS
Myocarditis is inflammation of heart muscle. It is caused by virus and can lead to heart failure, or sudden death. 
WEAK HEART VALVE 
A
 faulty heart valve e.g the mitral valve, will allow blood to flow 
backwards, which means the affected heart chamber has to contract with 
more force than usual..
THYROID DISEASES
The
 thyroid gland regulates many metabolic functions. Untreated, a thyroid 
condition can lead to high blood pressure, high blood cholesterol 
levels, irregular heartbeat and enlargement of the heart.
Other
 contributing factors or conditions include obesity, lack of exercise, 
previous heart attack, and also old people are at greatest risk, because
 as we get older, our arteries lose some of their elasticity. This 
stiffening of the blood vessels causes high blood pressure, which is a 
risk factor for enlarged heart.
                                         SYMPTOMS
 Possible symptoms of an enlarged heart include
• Breathing problems e.g shortness of breath.
• Dizziness.
• Arrhythmia (irregular heartbeat).
• Heart palpitations.
• Fluid retention and Oedema (swelling).
BUT, there are exceptional cases where an enlarged heart may be asymptomatic (have no symptoms).
                                      TREATMENT
An
 enlarged heart is treatable majorly by correcting the cause(s). 
Treatment for an enlarged heart can include medications to control high 
blood pressure and to prevent further enlargement, medical procedures or
 surgery (to replace faulty heart valve).
Also
 adopting a good lifestyle (through diet (by reducing fat intake), 
stopping smoking and drinking, exercising (e.g regular cardiovascular 
exercise).
Regular medical check-ups to make sure the treatments are working, and to detect potential dangers ahead of time.
#StayHealthy #StayAlive.
REFERENCE:
Better Health Channel 



