many people are concerned about their memory as they get older. Ofen they think there's nothing that can be done about it, but this article suggests there are some lifestyle and nutrition changes that can be made to make things better:
http://www.healthandgoodness.com/health/feed_brain_memory.html
these changes are also likely to help to stabilise mdd swings, so take a peak even f you don't consider yourself 'old'!