WHen humans do something that helps them survive, the brain emits dopamine to reward us and thus encourage us to do it again. It feels good. CHeck out this phenomenon sometime by eating several bites of blueberries and wait a couple of minutes for them to begin to get into our bloodstream, maybe two minutes later. Try it on an empty stomach so as to not have a dopamine suppressing food negate the feelinig. You will glow. DOes the same thing happen when you take L DOPA. I suspect not. THe reason would be it seems that with pill forms of our biological molecules, they dont exactly match. I know the molecular forumula is the same but maybe the natural form is crystalline configuration and L Dopa is amorphous. Whenever they do a test with things such as beta carotene or vitamin C pills for heart disease or cancer, they make it worse than if you took nothing, as opposed to getting the supposed same thing in food. So if L Dopa does not make you feel as good as blueberries, or a sniff of cocaine for any who have experienced that, then Im wondering if more can be gained from a diet that raises dopamine than taking it in a pill form. I have posted such a diet and it should be showing shortly, posted originally a couple of years ago.