function.
Creatinine is a good example.
Because creatinine production is influenced by muscle mass, someone who loses substantial muscle may have a lower blood creatinine concentration even though kidney function hasn’t improved.
This is one reason clinicians may use additional information when evaluating people with very low muscle mass.
It also demonstrates why the body cannot be divided neatly into separate systems.
The kidneys and muscles are connected through metabolism, circulation and chemistry.
## The Importance of Personalized Care
Perhaps the biggest takeaway is that kidney and muscle health cannot always be managed using generic health advice.
A recommendation that is excellent for one person can be inappropriate for another.
For example:
One person may benefit from drinking more fluids.
Another may have a fluid restriction.
One person may benefit from increasing dietary protein.
Another may need to
