Anorexia nervosa is an eating disorder and psychological condition marked by extreme self-starvation due to a distorted body image . People with anorexia think they are fat, regardless of how much they weigh, and are obsessive about monitoring their weight and the food they consume. They may regularly refuse to eat or eat only minimal amounts of food.
The Anorexia Nervosa-Physical Health Connection
The relationship between anorexia nervosa and physical health is bidirectional and profound. Modern neuroscience has confirmed what clinicians long observed: psychological states directly impact bodily systems.
Physical Symptoms of Anorexia Nervosa
People managing anorexia nervosa commonly experience:
- Fatigue and low energy
- Headaches and muscle tension
- Digestive disruptions (IBS, nausea, appetite changes)
- Sleep disturbances affecting cellular repair
- Immune system dysregulation
- Cardiovascular effects (blood pressure, heart rate variability)
- Chronic pain amplification
How Anorexia Nervosa Affects Body Systems
Stress hormones: Anorexia Nervosa often elevates cortisol and adrenaline, which when chronically elevated cause inflammation, insulin resistance, and immune suppression.
Nervous system: The autonomic nervous system shifts toward sympathetic dominance ("fight or flight"), reducing digestive, immune, and reproductive function.
Inflammation: Psychological distress promotes inflammatory cytokines linked to heart disease, diabetes, and autoimmune conditions.
Physical Health Practices That Help Anorexia Nervosa
Research shows these interventions improve both anorexia nervosa and physical health simultaneously:
- Regular aerobic exercise — 30 min, 3–5× weekly reduces symptoms significantly
- Anti-inflammatory diet — Mediterranean diet pattern supports mood and reduces inflammation
- Sleep optimization — 7–9 hours consistently transforms anorexia nervosa outcomes
- Breathing practices — diaphragmatic breathing activates parasympathetic recovery
- Reducing alcohol and processed foods — both worsen anorexia nervosa symptoms
When to Seek Integrated Care
Look for healthcare providers who address both physical and psychological dimensions if anorexia nervosa is affecting your body. Integrative psychiatry, functional medicine, and psychosomatic medicine specialize in this overlap.