Computers really do kill brain cells. This post proves it.

But seriously, how about the EM coming from all around us? Power lines, handphones, kitchen appliances, television? People lose memory because they don't use it. If you want to remember something, USE it. For example, if you dial phone numbers manually instead of using the phonebook function, you WILL remember the numbers you dial frequently.

One of my friends actually forgot their own home number.