Answer: bile
<span>If you have a problem digesting fats, you have a problem with your bile. Bile is excreted by the liver and stored in the gallbladder for later use. It helps break down the fats and aids in the absorption of fat-soluble vitamins. You will have trouble digesting fats if you are running deficient in bile.</span>
Losing appetite, receiving bad grades, hiding in her room,
The song fly me to the moon is about a Man who wants his partner to "fly him to the moon" as in take all his worries away and wanting to be kissed. based on this I think its about the human need for affection.
sorry if this is a bad answer this is all i could think of.
Shinji get in the robot!