Is it possible for inflation to evenly affect all people?

Question

I conducted a small research project using government inflation data, and it showed that inflation is much more severe towards retirement-age people as well as low-income households. Is there a way to prevent this, or is that an inherent part of our economic system? Here's a link to my findings: https://docs.google.com/document/d/1owCunc4XYZN9oKLLygws6_JY9OsG7Y3biKoj97X1U1M/edit?usp=sharing