Answer:
If you lose me you may cause people around you to lose me too.
I am the noblest musical instrument
People make me, save me, change me, and raise me. What am I?
I am the minerals vital for your good health.
I build up castles. I tear down mountains. I make some men blind, but I help others to see. What am I?
A little house full of meat, no door to go in and eat.