Kakorexia is the opposite disorder of orthorexia. Kakorexia is an eating disorder that involves consuming only unhealthy foods and refusing to eat healthy foods.

Orthorexia was derived by this
ορθο- (ortho, "right" or "correct"), and όρεξις (orexis, "appetite"), literally meaning 'correct appetite', but in practice meaning 'correct diet'.
Kakorexia is derived by this
κᾰκός- (kakos, "bad" or "useless"), and όρεξις (orexis, "appetite"), literally meaning 'bad appetite', but in practice meaning 'bad diet'.

Signs/Symptoms:
- only eating junk food
- junk food addiction
- low to no fiber intake
- lack of nutrient intake
- feeling sluggish
- poor immune system
- compulsive eating
- eating more due to lack of satiety
Health Risks:
- obesity
- heart disease
- high blood pressure
- high cholesterol
- high triglycerides
- high glucose levels
- high insulin levels
- insulin resistence
- type 2 diabetes
And the list goes on and on.