The brain changes the DNA ?

[nosferatus]

So i was talking to this frined and he said that when you start changing tha way you thing about something - you change your DNA. That means if you , for example, think that god exist, but few years later you stop believeing in that and start believing in evolution or something else ... doesn't matter - your DNA will change because of that change of thinking. My question is - is it possible to change your DNA by changing your toughts.. ?

[JackBean]

no, the DNA is not changing only because of some believes. That's only a believe.