Hmm.
Hmm.
"Information" has a precise meaning. It is easy to design an experiment that proves information is being stored within yourself somewhere.
What form it takes hardly matters at all, if we can put bits in and get them back out later, information is being stored, and that is memory.
It's obvious that your immune system also stores information. Nobody would really question that -- it's a necessary precondition for vaccines to work. These are information-theoretic memories too. They are all that's required to show that the body computes.
There's something in the physical structure of my brain that encodes various data in a probabilistic, fuzzy, emotionally-connected way, and in a way that will be virtually impossible to identify and understand. The information's still stored.
The brain has storage for data. It just works differently, is lossy, and connects with other data for compression or reinforcement. This is still storage.