Blood.

After smelling the world for a whole 2 decades now,
yours truly is still in the dark as to what blood group she's in.

Wasn't thinking about it until that topic was being discussed in a class.

The reason why we humans fall sick & suffer from a diversity of diseases is because we eat stuffs that are not meant for us to consume.
Because humans are categorised into different blood groups,
the food that can be eaten by each group also varies & sorry to say, is limited.
So it doesn't mean that a medicine that works for A, will also work for B.
And what you like to eat &/or always eat, may actually be doing harm to your body.

Hopefully, she's in the AB+ blood group.
Why?
Go figure.