I just thought of another shift in diet, I rarely eat sugar now, though when I was younger I think I may have been actually addicted to the stuff - inasmuch as I frequently experienced powerful cravings for sugar-dense foods, several times a day. The sugar-injection (so to speak) of a couple of sugar stuffed chocolate bars, would leave me buzzing like crazy for an hour or less, and then would come the low. Boof! So mood and energy swings all over the place for quite a few years. I weaned myself off the stuff, and feel much more level as a result. Both mental mood and physical energy is far more steady without the white stuff. If I do have sugar, it's usually in the form of homemade puddings. Puddings with wholegrains, fruit, oats and nuts, and such good things that help to give the blood a bit of a mattress. I also make use more 'natural' (I know it's a bit of a nonsense word) sugars like maple syrup and honey. No meds stopped, but I don't get sugar cravings or the resultant mood swings any more. Minimising sugar in my diet, has certainly impacted on my health positively so far as I'm concerned.