The Psychology of Overeating and Undereating: Understanding Our Relationship With Food

Food is meant to nourish us both physically and emotionally. Yet for many people, eating becomes tangled with stress, anxiety, trauma, guilt, or control. As a Sydney counsellor working with anxiety, depression and trauma, I often see how overeating and undereating are not about willpower, but about what’s happening beneath the surface.

Our eating patterns are deeply connected to our nervous system, emotions, and life experiences. Understanding this connection is the first step toward healing.

Why We Overeat

Overeating is often a form of emotional regulation. Food can soothe, distract, numb, or comfort when emotions feel overwhelming.

Common psychological drivers include:

• Anxiety and chronic stress

• Trauma or emotional neglect

• Loneliness or unmet emotional needs

• Restrictive dieting (which often leads to rebound eating)

• Using food to self-soothe when safety or comfort feels lacking

  
  

When the body is stuck in a stress response, it seeks quick relief — and food becomes an accessible source of temporary calm.

Why We Undereat

Undereating is frequently linked to control, fear, or emotional disconnection rather than a lack of hunger.

Psychological factors can include:

• Anxiety or a need to feel in control

• Depression and loss of appetite

• Trauma and body disconnection

• Perfectionism or harsh self-criticism

• Feeling undeserving of care or nourishment

  
  

For some people, undereating creates a false sense of control when life feels chaotic or unsafe.

Eating & Mental Health in Australia

In Australia, disordered eating exists on a spectrum and affects people of all ages and backgrounds:

• Around 9 million Australians experience disordered eating behaviours in their lifetime

• 1 in 3 people who experience disordered eating are male

• Disordered eating is strongly linked with anxiety, depression and trauma histories

• Anxiety disorders affect over 17% of Australians, and depression affects around 1 in 8 people, both of which significantly impact eating patterns

  
  

Many people struggle quietly, believing their eating habits are a “personal failure” rather than a mental health signal asking for care.

Counselling Strategies That Help Heal Eating Patterns

Counselling doesn’t focus on food rules — it focuses on understanding your relationship with food and yourself.

Effective counselling strategies include:

1. Exploring Emotional Triggers

Identifying what emotions, situations or memories drive overeating or undereating.

2. Cognitive Behavioural Therapy (CBT)

Challenging unhelpful beliefs such as guilt, shame, or all-or-nothing thinking around food.

3. Nervous System Regulation

Learning grounding and calming techniques to reduce emotional eating driven by stress or anxiety.

4. Trauma-Informed Counselling

Supporting clients whose eating patterns are connected to past trauma, neglect, or unsafe environments.

5. Self-Compassion & Reconnection

Helping clients rebuild trust with their body, hunger cues, and emotional needs — without judgement.

Healing is not about control — it’s about safety, understanding, and kindness toward yourself.

You Don’t Have to Navigate This Alone

If your eating patterns feel confusing, distressing, or connected to anxiety, depression or trauma, support can make a meaningful difference.

At Rebuild Together Counselling, I offer affordable short-term and long-term counselling to support individuals experiencing anxiety, depression and trauma.

As a Sydney counsellor based in Canterbury NSW, I provide a warm, non-judgemental space where healing happens at your pace.

You deserve support — not shame.

Visit www.rebuildtogethercounselling.com.au to learn more or make contact today.

Final Thought

Overeating and undereating are not weaknesses — they are messages. With compassionate counselling, those messages can be understood, and your relationship with food and yourself can gently heal.

Healing begins with care, not criticism.

Free consultation