It also contain peroxides. using dates after whole days without eating anything bring temperature of body to normal and makes humanbody safe against many diseases which can be caused due to low temperature in body i.e. Low blood pressure
Paralysis
Facial paralysis
etc
Patients affecting with insuficient blood need iron which is naturally available in dates.
It is best is summer days to eat dates rather than taking cold water just after breaking fast.
Cold water can cause liver inflamation and stomach diseases while dates bring human body on safer side from these diseases.