orthorexia nervosa when healthy eating becomes extreme

Spends many hours researching foods. Unable to focus on tasks such as work, school, or social activities.
Avoids foods with certain ingredients, such as fat, animal products, preservatives or other additives, or any ingredients that aren’t considered “healthy” or “pure.” Knowingly or unknowingly eating unhealthy or impure food may cause guilt and emotional distress.

Limited food choice leads to a nutritionally unbalanced diet, which can have negative health effects.
Worries that impure foods will have negative physically or emotionally effects.
Is intolerant of other people’s beliefs about food.
Food rules don’t align with religious or medical reasons (such as food allergy) for avoidance.