Iron is necessary for the formation of Red Blood Cells...which carry Oxygen
to all body tissues.
And sugar (glucose
) serves as the source of energy for the body.
So...the symptoms mentioned by you have been caused by the low level of Iron & Sugar in your blood.
It will be better to take Iron preparations to improve your blood Iron levels.
Also keep a regular check of your blood pressure levels.
Other than that eat a healthy diet, exercise regularly, avoid stress
, get good sleep, think positive and stay happy.
Wishing you good health.
Thanks & take care.