Fractals are not just complex shapes and pretty pictures generated by computers.
In theory, one can argue that everything existent on this world is a fractal:
the branching of tracheal tubes,
the leaves in trees
the veins in a hand
a puffy cumulus cloud,
water swirling and twisting out of a tap,
tiny oxygene molecule, or the DNA molecule, my question is : Are there medical applications on fractals?