As soon as I found my massive tumor, I realized it was a result of having my laptop constantly on my belly for 6-8 hours a day for the last several years.
It seems possible to me that the excessive heat, the electromagnetic field of the spinning hard drive, and the magnetic lid closure all energetically attract or stagnate blood in that area. I've known intuitively for years that it probably wasnt good for me to have my laptop constantly attached to my body, but I work from home and the most comfortable position was to lay back and prop my computer on my belly. My belly would heat up so much that it would turn red, so I would need to put a pillow under the computer, but even with the pillow, I could still feel the heat. The electrical heat generated by a machine is a strange kind of heat - it feels different than heat from a heating pad or fire or warm body. It has an irritating feel to it. I feel pretty certain that the amount of time I spend with my laptop and phone close to my body are contributing to the problem.
My Mac tech and others say that they are safe, but what do they know? They don't have tumors!!!