One thing that changes your brain is an addiction that fries your dopamine neurotransmitters and making it difficult to experience that natural energy we were born with.
If you are living in modern America, you are addicted to carbohydrates and it is ignored until you become obese or diabetic.
How do you "feed your brain?" I prefer nutrients, not toxins.
Listen to Dr. Robert Cwyes give a very short and sweet (sorry) explanation.