It can cause physical harm because of people pressuring others to do dangerous activities such as robbing, killing, stealing. Emotional harm due to mental stability of if they don't do this activity they are not worthy.
This is partly true but migraines can also be caused by stress and anxiety.
High self esteem i believe it makes the most sense
Answer:
refrigeration and gmos (this is based on research but it is souly opinion based because it all depends on what you think is the most important. please accept this answer with discretion.)
Explanation:
refrigeration because it helped improve shelflife for food all across the world.
gmos because it saved many crops from complete devastation and saved farmers from endless debt and depression (of money).