Psychologists Warn Against These 5 Types of Toxic People in Relationships

In our relationships, some individuals can drain our energy, undermine our well-being, or make us question ourselves. Psychological research has identified certain personality types that are often best avoided or limited in our lives.

While cutting ties isn't always necessary, certain types of people share a common trait: they create dynamics where you constantly feel the need to adapt, excuse yourself, justify your actions, or endure discomfort. Over time, these interactions are linked to increased psychological distress, anxiety, and depressive symptoms, as highlighted in a 2009 study published in the National Library of Medicine. If you find yourself feeling diminished after every encounter, it’s not just your imagination. Here are five types of individuals that psychologists suggest you should be cautious of based on robust research in personality traits and relational dynamics.

1. The Manipulative Individuals

These individuals often exhibit “dark” traits, commonly categorized under the Dark Triad, which includes narcissism, Machiavellianism, and psychopathy. According to a 2019 study, these traits are associated with increased manipulation, aggressive behavior, and influence tactics in romantic relationships.

Signs you might observe include:

• Vague promises followed by sudden changes.
• Guilt-tripping when you set boundaries.
• A charming demeanor that turns cold depending on their interests.

In essence, when a relationship devolves into a power struggle, emotional security vanishes.

2. The Controlling Types

Control can manifest subtly and may be framed as concern or love. A 2024 study on coercive control has shown clear negative impacts on mental health, with a moderate association with depression and symptoms of post-traumatic stress.

Common signals to watch for include:

• Constant surveillance, questioning, and pervasive jealousy.
• Gradual isolation from friends, family, and activities.
• Pressure regarding your choices (appearance, outings, finances).

Love should never feel like confinement.

3. The Psychological Aggressors

Forms of psychological aggression, such as insults, cruel teasing, and implicit threats, can be devastating. A 2006 study indicated that experiencing psychological aggression is linked to greater psychological distress and anxiety, often surpassing the effects of physical aggression.

Keep an eye out for:

• Repeated hurtful sarcasm.
• Criticism regarding your intelligence, body, or emotions.
• Dismissive remarks like “You’re overreacting” after being hurt.

Remember, psychological violence is not less serious than physical violence.

4. The Constant Critics

Certain toxic dynamics may not resemble outright violence but can erode your self-esteem over time. Research by John Gottman has identified contempt as one of the most dangerous signals in relationships, predicting divorce in his longitudinal studies.

In practice, this might look like:

• Sighs, eye-rolling, and humiliating comments.
• Statements like “You’re incapable” or “You’re ridiculous.”
• The feeling of being judged rather than understood.

A healthy relationship should address problems rather than attack individuals.

5. The Reality Twisters

Some people go beyond simple disagreement; they deny your experiences and perceptions. The 2024 study mentioned earlier describes these confusion tactics as tools of psychological domination, which can have lasting effects on mental health.

Examples might include:

• “I never said that,” despite it being recent.
• “You’re too sensitive; you’re making things up.”
• “Everyone thinks you’re difficult.”

If you find yourself mentally documenting conversations to prove your sanity, that’s a significant red flag.

Consider This Before Cutting Ties

After interacting with someone, ask yourself: do you feel more calm, confident, and free? Or do you feel tense, guilty, and drained?

If it’s the latter, often the right choice isn’t to engage more—it’s to set a boundary. Sometimes, that means walking away.