why di we have bags under our eyes and what are they caused by?

Question: why di we have bags under our eyes and what are they caused by?
- Keywords:
  bag,
  eye
Asked by squidward to Deborah, Euan, Maheen, Rob, Stu on 18 Jun 2016.
- Deborah Prunty answered on 18 Jun 2016:
  
  As we get older our body changes. We start storing more fat and our skin and tissue aren’t as tight and elastic as they once were. The skin under our eyes is particularly sensitive to this, and because it’s in such a central part of the face it’s extra noticeable.

Question: why di we have bags under our eyes and what are they caused by?