India, Dec. 18 -- Feeling constantly exhausted, dizzy or unusually forgetful can be frustrating - especially when blood tests come back "normal" and offer no clear answers. But iron deficiency isn't always obvious on standard reports. In many cases, symptoms begin when your iron stores start to run low, long before blood iron or haemoglobin levels fall. Understanding which markers to look at can make all the difference in getting an accurate diagnosis and timely care.

Dr Karan Rajan, a UK-based surgeon and popular health content creator, is breaking down the key iron markers you should consider testing if you're experiencing symptoms of iron deficiency - such as dizziness and persistent exhaustion - despite blood reports showing "normal"...