The Food and Drug Administration (FDA) is a good source for all of the above. While the FDA mostly revolves and focuses on information regarding nutrition labels and food safety, they can also provide you with basic information regarding medical equipment and what are the important aspects of it.
It's not clear what causes most bone cancers. Doctors know bone cancer
begins as an error in a cell's DNA. The error tells the cell to grow and
divide in an uncontrolled way. These cells go on living, rather than
dying at a set time. The accumulating mutated cells form a mass
that can spread to other areas of the body.
I think it’s Stress response..
