It is estimated that each year about 400 000 children and adolescents of 0-19 years old develop cancer. When cancer is diagnosed in a child, it is certainly an atrocious issue of serious tension for parents about their child’s health, treatment, and future. But most of us do not know what causes cancer in children. Continue reading this article to find out the most common causes of cancer in children. Let’s check out first the types of cancer in children Generally, types of childhood cancer are not the same as adult cancer.  The most common childhood cancers are: -          Leukemia – begins in the bone marrow and spread via the bloodstream -          Brain and central nervous system tumors – gliomas and medulloblastoma -          neuroblastoma – is called a cancer of the nerve tissue and is generally found around the kidneys -          Lymphoma – begin in white blood cells (lymphocytes), usually in the lymph nodes and other lymph tissues -          Wilms’ tumor – known as a type of kidney cancer -          Bone cancer – osteosarcoma and Ewing sarcoma -          rhabdomyosarcoma – develop in muscle and connective tissue -          Retinoblastoma – is called the cancer of the retina Read Panic Attacks: Symptoms, Causes, Remedies, and Treatment The frequent causes of cancer in children There are many causes of cancer. Modern Scientists believe that it is the interconnection of many characteristics together that produces cancer. The factors tangled might be environmental, genetic, or constitutional characteristics of the individuals. Cancers in children often begin or happen in the stem cells that are capable of producing other types of synthesized cells that the body requires. Childhood cancer is usually caused by sporadic (happens by chance) cells. Epithelial cells in adults generally become cancerous. These cells stroke the body cavity and overlap the body surface. Cancer occurs from environmental disclosure to these cells over a period of time. This adult cancer is sometimes referred to as received for this reason that leads to a threat to genetic child cancer. However, according to Tanya Watt, M.D., a pediatric oncologist at Children's Health℠ and Associate Professor at UT Southwestern, parents, children, or anybody’s is not responsible at all for developing cancer in children. Read: Breast Cancer Prevention: How to Cut Your Risk?  Most Common Risk Factors of cancers As stated above, cancers in adults have been linked with recurring exposures or risk factors. A risk factor is a thing or event that may increase people's chances of developing a disease. A risk factor does not surely cause the disease, but it may be the cause of making the body less resistant to it. Here as below, some most common mechanisms and risk factors are considered to come up with cancer: