Quote from b.randolph
.... My instructor suggests only to do something with the albumin. His BMI is 24.9, so he's not "imbalanced nutrition less than" .....
On the contrary. Just because BMI is a normal value doesn't necessarily mean he's receiving enough nutrients. Would you agree that a normal aging process is decreased GI secretions? Parietal cells in the stomach secret gastric intrinsic factors which are responsible for absorbing vit B12. B12 is involved in a plethora of things including RBC and albumin formation. Which is why albumin levels are a huge indication of malnutrition.
When aging slows down parietal cells, they run a higher risk of pernicious anemia and edema due to loss of oncotic pressure from decreased albumin, among other things.
This should be more than enough information to get you on your way. Look at the big picture and think in what ways decreased RBC's could affect the body.