Cancer
Today I will write about types of cancer,causes and how to prevent it.
Some types of Cancer: (there are more than 100 types so I'm going to write the common ones:
Breast (male-Female):
Kidney.
lung.
leukemia (all types) It is the blood cancer.
Melanoma(skin cancer).

Lung Cancer: It is mostly caused because of smoking alot,for example is someone smokes 5 cigarettes per day they are highly increasing the chance of lung cancer.Teens these days think smoking is cool and then they spread the word and it becomes worse for everyone because they are polluting the air too.
Kidney:Changes mutations in genetics.DNA doesn't only effect how we look but also how our cells grow and die,certain genes that help cells grow,divide and stay alive are called oncogenes. Others that slow down cell division or kill the cells are called tumor genes.Cancer can be causes by DNA changes that turn on oncogenes or turn off tumor genes.
Leukemia is the cancer of the blood or bone marrow.This cancer can be caused because of the white cells being damaged in some way. Normal blood cells die after a time and other ones are replaced in the bone marrow.The bad cells do not die so easily and by time they multiply and leave no place for the normal ones.
Melanoma: Melanoma is the skin cancer.It is mainly caused because of the sun radiation or the tanning machines.the normal colors are black and brown but they can also be purple ,red,blue or white.
So how to prevent all this from happening:Eat healthy: eating healthy is a big part in our lives,any people got cancer because of drinking alcohol or eating fast food, some fruits such as grapes,strawberries,kiwi and blueberries can prevent cancer
Do not smoke
Be physically active: Every day you should walk at least 30 minutes.and also maintain a healthy weight.