cancer comes from faulty cell division and abnormal cell growth. So why do people get brain cancer as adults, when their neural system stops dividing at a young age?
In: Biology
Brain does not contain only neuron cells. There are other types of cells as well like glia cells. There are different types of brain tumor depending upon from which cells it originates.
Your premise is wrong. Cells die and are replaced. In general, cells are replaced every 7 to 10 years.
So, cancer might develop during this replacement process– which is why smoking causes lung cancer.
Smoking reduces the life span of lung cells, which causes the body to produce more replacement lung cells, which increases the chance that some of those replacement cells are cancerous.
Cancer can develop anywhere in the body and spread anywhere in the body thought vascular system.
That’s kind of the point. You get cancer when cells are dividing when they aren’t supposed to.
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