9. Weight gain
Weight gain can also be an issue in those who are going through toxic relationships, as indulging in food can often become a coping mechanism. This can also indicate a lack of intimacy, as craving neurochemical responses that are lacking in the relationship often lead to a reliance on food.
For example, there is a reason that people going through breakups like to have comfort foods like chocolate - because it can increase the endorphins that most can attain in their relationships.
Gaining weight may also be a sign that you have been relying too heavily on alcohol, as the level of calories in each beverage tends to spike people's weights.