An Article To Share

I read an interesting article recently in the March 2008 issue of Scientific American, which started on page 54. The focus of my interest in the article was myelination, and it being a correlation between things such as ADD/ADHD, Depression, and Schizophrenia. A brain cell consists of dendrites, a cell body, a nucleus, an axon, and axon terminals. The myelin sheath surrounds the axon and acts as an insulator, to help prevent the electro-chemical pulses from shorting out from one adjacent cell to another. The outer gray matter of a brain is said to be the cell body and dendrites of brain cells, and the white matter within is said to be myelin and axons.

I saw a TV show on a PBS channel by the author of the book, "Change Your Brain, Change Your Life". One of the things that he mentioned was the use of fish oil supplements for the health of your brain. He said that brain matter is essentially a lump of fatty tissues. I had already read from another source that fish oil (an omega-3 fatty acid) can be used as an aid to treat ADD/ADHD. Does the omega-3 fatty acid contribute to myelination?

I'm interested in as to if there is a possibility of brain cells and/or myelin being degraded from the prolonged release of adrenal cortisol (stress).