Reading around, online, as I do I came across a link to this:Dangerrrr: cats could alter your personality. I read it, and thought it was an April fools gag. Except it was published in September.
The upshot of the article for those that can’t be bothered to read it is this: Cats carry a parasite called toxoplasma gondii, this can be transmitted to humans. This is not such a big deal as (assuming your immune system is ok and you’re not a featus) it doesn’t cause any major problems. It can however have an effect on your personality. Men become more aggressive, scruffy and antisocial. Women however, suffer from the ‘sex kitten’ effect, they become more fun loving, less trust worthy and more desirable.

Reading this I thought two things: Firstly what a load of B.S. ™ and secondly women seem to get a much better deal.

I got curious and did a bit of digging. It seems that there is indeed a parasite in cats called toxoplasma gondii, and it can be passed to humans. The possible change in personality has been measured but not conclusively. It can be contracted by eating contaminated food. Or playing with kitty litter.
Simply put the eggs or larvae (or whatever they are) are found in the cats feces, the final life stage of the parasite is in the cat, if you see what I mean.
It can be quite a nast little thing, if you’ve got AIDS, or have a generally weak immune system. Apparently this can include pregnant women and babies.

Seeing as at least half of the British cat population has the parasite, well I’d advise you to stop eating that cat feces.
Something I’d advise against anyway to be fair.