Cancer is a multistep process usually occurring over many years. the first step in the initiation process is thought to be caused

Answer is genetic mutation in the growth regulatory genes.

Explanation:

Cancer is a disease cause by accumulated damage occurring to genes or continuous division of abnormal cells in the body. This may occur due to exposure to substances that are cancerous.

It can be be treated by a method known as chemotherapy.

There are some food items that can lower the risk of cancer in the body. These include berries, nuts, carrots , broccoli among others.

Note that cancer can spread to other parts of the body through lymph system and blood.

energy and particles

c. establishing proper sleep hygiene