I don't think anything could be "that easy" but it could definitely be a component worth looking into or at least asking the doc about.

I take a folic acid supplement because of the sulfa meds I take for my colitis. The addiional folic acid sure didn't prevent me from becoming depressed... but on the other hand maybe even with the suppliment, the sulfa meds were depleting my vitamin more than the folic acid was making up for it and maybe that was a contribuing factor.

Doctor's might not check this because not all docs are up on all the latest news and not all of them subscribe to all the medical "philosophies". Asian medicine for example puts a lot of emphasis on emotional health and "energy" in addition to drugs and surgery... and although I believe many modern reports are showing definite positive effects for such treatments, western medicine has yet to catch up. So it is worth asking about I think, and maybe a few different opinions from different docs.

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--http://www.idexter.com