baryophobia

bar·y·o·pho·bi·a

(bar'ē-ō-fō'bē-ă)
An irrational fear of becoming overweight.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

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.
Medical Dictionary, © 2009 Farlex and Partners