Unresolved Stress Leads to Energy Loss

Depression is the inability to deal with stress.

It starts as an emotional problem and later becomes a physical problem.

If you have had stress or obsession which you were unable to deal with, this leads to overspending of energy.

It is essential to get rid of the stress. 

When this continues for a long time and becomes the norm is when this becomes dangerous.  

As this expenditure of energy continues on the subconscious level even when it seems that a person is stress free and is fine.