citrus

My family moved 2 years ago to our current house. Oddly there has always been this large bush with thorns all over it, that produces these citrus fruits that ripen to a orange yellow every fall. They are small and have a little fuzz on the rind, like a peach. We haven't consumed them yet, but...

I have read many posts on here about poisonous or otherwise prohibited foods, but other than one mention that citrus makes eggs taste funny, and another that it interferes with calcium absorption, I can't find any really definitive explanation of why citrus is bad. Is ANY citrus bad, or are...