Hazards of Obesity Here are some fatal effects of obesity on internal organs and system which a fat person must know and try to get rid of excess fat as soon as possible. - It is all about the weight, when a normal person walks. - As we all know that heart is responsible for purifying of blood and circulating the pure blood in to all the parts of body through veins and blood vessels. This results into a very critical situation as with these contracted arteries and veins, it becomes very hard for the heart to pump and supply blood. When we cut a vein in to two pieces and see the circular area stacee section we call this "lumen". Heart has to pump faster in order to make a proper blood circulation to various parts of the body and ma these results in to a severe heart attack.

In a fat person the cholesterol level is high and it gets deposited in the lumen (the inner surface of the blood vessel) and as a result of this it gets contracted and stiff.

Heart gets the impure blood through arteries and after the process of blood purification; blood is supplied to all the parts of body and the tissues through veins.