Re: have a question...
At 14 I wouldnt recommend it. Your body is in its peak growing years and needs all the nutrients it can get. Unless you need to medically, or have a strong belief that you need to do this, i would put it off for a couple years until your body has slowed the growing.
If this is just about making healthy choices, you could emulate the same sort of idea- without cutting out the meat and carbs and everything- by reducing the amount of "junk" you eat (ie/ candy, sodas, chocolate, chips, sugary things, refined carbs- donuts, cakes, cookies, pastries, etc..) but remember that you shouldnt be elminiating anything completely, especially at your age!