baryophobia

bar·y·o·pho·bi·a

(bar'ē-ō-fō'bē-ă) An irrational fear of becoming overweight.

baryophobia

(băr″ĭ-ō-fō′bē-ă) The unreasonable fear that one's child will become obese. The allowed diet may be insufficient to support the child's growth and development needs.