Had my annual full blood test back in October, all well apart from one small matter. My red blood cells are slightly enlarged which can result in low oxygen getting through the system.
Cause, low levels of vitamin B12
Cause of low B12 levels.
Alcohol strips the B12 from the system as does reflux medication.
Solution, drink less, you are having a lend of me there.
Cut out or down on Nexium.
Continue with monthly injections of B12.