Monday, September 13, 2010

From Our Brain's prespective, Food is a Drug


"We Are What We Eat", its fact and it's becoming very clear day by day - more here

"In truth, anything you take into your body should be considered a drug, whether it’s obviously nutritious or not. As you will see, even molecules that are clearly nutritious (such as essential amino acids like lysine and tryptophan—available in bulk at your nearest grocery store) exhibit properties that many of us would attribute to a drug.

The foods we eat, and many of our most popular psychoactive drugs, come from plants or animals. The ingredients in these plant and animal products are very similar if not identical to the neurotransmitters our brains and bodies use to function normally. This is why the contents of our diets can interact with our neurons to influence brain function, and it highlights a very important principle: The chemicals in the food that you eat will only act upon your brain if in some way those chemicals resemble an actual neurotransmitter or otherwise interact with a biochemical process in your brain that influences the production, release, or inactivation of a neurotransmitter. These “active” ingredients deserve close scrutiny.

How is it possible that plants and humans use such similar chemicals for normal, everyday functions? Plants produce chemicals that are capable of affecting our brain because they share an evolutionary history with us on this planet. Even primitive one-celled organisms produce many of the same chemicals that are in our brains. Therefore, whether you choose to eat a bunch of broccoli, a plate of sushi, or a heap of amoeba, the chemicals each meal contains may alter how your neurons function and, therefore, how you feel or think. We have all experienced the consequences of our shared evolutionary history with the plants we eat.
To conclude, because of your shared evolutionary history with the plants and animals on this planet, when you consume them you risk having their chemicals affect how you feel and even how you think. The degree to which they influence your cognitive functioning depends upon how easily they can achieve an adequate concentration in your brain. As you’ve read, this depends upon how much of each chemical is contained in your diet, your age and physical health, and the status of your blood-gut and blood-brain barriers. With these concepts in mind, consider the following science fiction scenario: a spaceman is walking on an Earth-like planet and is suddenly bitten by an unfriendly fanged creature. The spaceman can see that he is injured and that the beast’s bite injected a liquid substance, perhaps venom, beneath his skin. Does he die

No, he does not die, because his species and that of the creature on this foreign planet do not share an evolutionary past or a common ancestor. Although they may both be made of proteins formed from amino acids, their independent evolutionary paths should made it highly improbable that they use similar neurotransmitter molecules within their respective brains and bodies. Every spaceman from Flash Gordon to Captain Kirk to Luke Skywalker should feel safe walking around any planet (except their own) with impunity from animal and plant toxins"

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