Remember that vitamins A,D,E and K are fat soluble, therefore they store in the body. I seem to remember reading about a woman "addicted" to carrot juice (high in vitamin A) who almost killed herself with the amount of stored vitamin A. There was a warning on the veal liver that I buy from Lidl (when they have it in stock, for a very brief period) that one shouldn't eat more than (can't remember!) so much a week.
Vitamins B & C are water soluble, so even if you were to eat (for example) 10 oranges today, you would still need vitamin C tomorrow.