There are at least 2 things linked from the description:
--- difficulty in planning, organizing etc is energy of "Dampness", seemingly lack of it in brain
--- too much food uptake means excess of Dampness in stomach
--- Brain is controlled by energy of Burn, stomach - by energy of Dampness.
They are in "polar" relations: Burn is Yang and Dampness is Yin so excess in stomach may naturally be accompanied by lack in brain.
Good Chinese or Su-jok specialist can correct this altogether.