Cancer is regarded as one of the most deadly diseases amongst human. When the body cells are infected by cancer, the organism causing the disease replicates and spread into other cells thereby infecting the whole body cells or a particular area in the body. In this article, I would explain explicitly the reason for the rapid spread of cancerous cells in the body. In recent times, medical researchers have discovered an internal structure in the human body and this structure is referred to as the 'interstitium'. Further researches has revealed the structure to have both positive and negative effects to the well-being of an Individual. The negative aspect of its diverse effects is the spread of disease internally which could include the spread of cancerous cells within the body.

The Interstitium is an internal structure found under the skin, lungs, guts, blood vessels, organs and even muscles. It is made up of a series of connected network of fluid-filled sinusial cells, interstitial fluids known as 'lymph' which functions with the lymphatic system. It also consists of connective tissues called 'collagen fibre' which is a functions as a bridge/network for cells which can be used to replace the worn-out. These structures have their roles to play in the body.

The interstitium cannot be seen with naked eye but with the help of a 'Binocular confocal laser endomicroscope'(BCLe) which allows to see tissues in living being. The microscope consists of sensors, lasers, which produces fluorescence which can see through human body.

The chemical composition of the interstitial fluids varies depending on its location in the body. Its provides the driving force to the cells needed to transmit electrical charges or impulses. These fluids also functions with the lymphatic system, endocrine system etc. The connecive tissue known as the collagen is a network of cells used in replenishing the worn-out/dead cells. The collagen is a rich source of protein for nourishing the skin, growth and development of the body,hence, its positive impact to the well-being of an individual.

The interstitial fluids conducts electrical signal(impulses) as cells move irregularly thereby colliding with one another. This tends to spread any disease present in the body. Also, when dead cells are replaced by interstitial cells infected with disease, the part tends to be infected with the disease as well and this may spread briskly throughout the body. Nonetheless, research is still on-going and more about he interstitium is yet to be discovered. In conclusion, the interstitium has some structural characteristics which is responsible for the spread of diseases within the body.