If I recall correctly, there was a GBA expansion that measured blood sugar. It's called the Didget blood glucose monitoring system, and I found it here: https:

If I recall correctly, there was a GBA expansion that measured blood sugar. It's called the Didget blood glucose monitoring system, and I found it here: https://en.wikipedia.org/wiki/List_of_Nintendo_DS_accessories https://en.wikipedia.org/wiki/List_of_Nintendo_DS_accessorie...