Why does cancer happen?

Answer 1

Your body is made up of cells, like a building is made up bricks. Inside each cell in your body, there is a copy of your genes. Genes are made of DNA and contain all the information your body needs to live and grow. Your genes even dictate what you look like: your hair colour, eye colour etc.

Cells in your body are constantly growing and repairing themselves. Each time a new cells grows, your genes are copied into the new cell. Sometimes, little mistakes are made and the DNA in the new cell ends up with an error in it. If this error affects the genes that contain the information the body needs for growth, the cell is cancerous and if it grows, it can lead to more cancer cells and eventually a tumour.

These errors in the DNA are completely random events and can happen to anyone. This means that everyone is at risk of cancer. However, there are things that a person can do that increases their risk. Things that cause damage to your cells and your body, increase your risk of cancer. These are things that we all know about: drinking, smoking, eating unhealthy foods, sun tanning. However, because it is all about risk, a perfectly healthy person can get cancer and a person that drinks and smokes excessively can not. Also living longer increases your risk too, that it why cancers are more prevalent in older generations.

Answer 2

This is as simple as it can be described.

Cancer starts because cells in a part of your body do not grow and divide the way that they are supposed to.

Cancer begins when when mutations disrupt the normal cell cycle, causing cells to divide in an uncontrrollable way.

Answer 3

People get cancer because they are sick and I DON'T KNOW

Answer 4

Cancer is a cell mutation. The cell is just over-reproductive and creates way too many different cells that are also cancerous.

Answer 5

cause is still undetermined, we only know certain behaviors increase liklihood