"Fixation with healthy eating can be sign of serious psychological disorder" and goes on to claim this "disease" is called orthorexia nervosa -- which is basically just Latin for "nervous about correct eating."
"Orthorexics commonly have rigid rules around eating. Refusing to touch sugar, salt, caffeine, alcohol, wheat, gluten, yeast, soya, corn and dairy foods is just the start of their diet restrictions. Any foods that have come into contact with pesticides, herbicides or contain artificial additives are also out."
Choosing healthy foods now called a mental disorder