Answer:
I've been around for millions of years, but I am no more than a month old. What am I?
After you go through a fall, I will take over. All life will stall, or at least grow slower. What am I?
I pass before the sun but make no shadow. What am I?
I am so delicious that I require a house to contain me.
I go around in circles, but always straight ahead, never complain, no matter where I am led.
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?