Why am I suddenly addicted to Apium graveolens and extra crunchy Arachis hypogaea butter?

I’ve always liked it, but for some reason, as Spring approaches, I can’t seem to get enough of it. No I’m not pregnant! I can’t be. But currently this is all I want to eat morning, noon, and night! My local Sushi Chef thinks I’m cheating on him. Could I be sick? Vitamin deficiency? Why this? Why now?