Post-traumatic stress disorder (PTSD) develops in some people exposed to severe traumatic events (violence, war, abuse, accidents, loss). It manifests with intrusive re-experiencing of the trauma (flashbacks, nightmares), avoidance of trauma-related stimuli, negative cognitive and emotional alterations, and hyperarousal of the autonomic nervous system (hypervigilance, exaggerated alarm responses, sleep disturbances). PTSD is not "just psychological": it has deep biological roots in the autonomic nervous system, the HPA axis (hypothalamic-pituitary-adrenal), the immune system, and the gut microbiome. Nutrition interacts with all these systems, offering supportive tools for the body in the healing journey.

The traumatized body: neurobiology and nutrition

Bessel van der Kolk, in his foundational work "The Body Keeps the Score" (2014), describes how trauma becomes "inscribed" in the body through threat-response circuits (amygdala, prefrontal cortex, hippocampus, autonomic nervous system). This embodiment of trauma has direct implications for nutrition. Autonomic nervous system hyperarousal (sympathetic system): the PTSD body is perpetually on alert. Chronically elevated cortisol has the same metabolic effects described in burnout: accelerated consumption of B vitamins, vitamin C, magnesium, and zinc. Hippocampal alterations: the hippocampus (fundamental for memory and contextualizing memories) is often reduced in volume in people with chronic PTSD (neuroimaging studies: Kitayama et al., 2005). BDNF (Brain-Derived Neurotrophic Factor) supports neuroplasticity and hippocampal growth. Physical exercise and omega-3s are the two non-pharmacological interventions with the strongest evidence for increasing BDNF. Chronic inflammation: a meta-analysis by Passos et al. (2015, Depression and Anxiety) found elevated levels of IL-6, TNF-alpha, and IFN-gamma in PTSD. An anti-inflammatory diet has a rationale for PTSD similar to that for depression and OCD. Microbiome: microbiome alterations are documented in PTSD (Hemmings et al., 2017, Psychosomatic Medicine). The traumatized gut (gastrointestinal disorders are very common in people with PTSD: irritable bowel syndrome, functional gastritis) requires specific dietary attention.

The difficult relationship with food in trauma: post-traumatic eating disorders

Trauma, especially interpersonal trauma (physical or sexual abuse, childhood neglect), is strongly associated with eating disorders. The data: 30-50% of people with anorexia nervosa report childhood trauma experiences, 60-70% of those with bulimia nervosa, an even higher percentage in binge eating disorder. Mechanisms linking trauma to eating disorders: dissociation during meals (dissociation is a common defense mechanism in trauma: it can manifest as inability to perceive hunger and satiety during eating, disconnection from the body), using food for emotional regulation (food as "anesthesia" for difficult emotions connected to trauma), control through food (controlling eating as the only area where one feels control in a life context where one feels overwhelmed), body image trauma (trauma can produce alienation from one's own body: food as a means to change or punish the body). The overlap between PTSD and eating disorders requires an integrated therapeutic approach: trauma must be treated (EMDR, trauma-focused CBT) in parallel with the eating disorder, not separately. A dietitian specialized in eating disorders with trauma training is the ideal professional.

Grounding through food: the body in the present

One of the central therapeutic strategies in PTSD treatment is grounding: techniques that bring the person out of traumatic re-experiencing and into the present moment through sensory stimuli. Food and meals can be tools for sensory grounding. The five senses during meals: the act of eating mindfully (mindful eating applied to trauma) mobilizes all the senses (visual, olfactory, gustatory, tactile, auditory: texture, the sound of chewing) and anchors the person in the concrete present, away from traumatic re-experiencing. Cooking as a grounding practice: chopping vegetables, kneading dough, feeling the warmth of the pot: these are concrete sensory acts that many trauma therapists include in occupational therapy. It's not "cooking to nourish": it's using bodily senses to reconnect body and mind in the safe present. The meal ritual as structure: trauma disrupts the structures of daily life. Restoring meal structure (fixed times, fixed places, preparation ritual) can be part of restoring the safety and predictability that trauma has destroyed.

Specific nutrients for the autonomic nervous system in PTSD

The hyperexcited autonomic nervous system in PTSD consumes nutritional resources at an accelerated rate. Specific nutritional priorities. Magnesium: the most directly involved in modulating the autonomic nervous system. Magnesium reduces neuronal excitability through blocking NMDA receptors. Magnesium deficiency amplifies the alarm response, tachycardia, and hypervigilance. Sources and supplementation: see previous articles on anxiety and insomnia. Omega-3 fatty acids: a study by Matsuoka et al. (2010, Journal of Affective Disorders) on firefighters after the Kobe earthquake found that those with higher plasma omega-3 levels had significantly lower risk of developing PTSD. A trial by Matsuoka et al. (2011) showed that omega-3 supplementation immediately after trauma reduced the probability of PTSD development. Studied dosage: 1,470 mg EPA + 147 mg DHA/day for 12 weeks. Omega-3 as a post-traumatic preventive intervention is a very active research area. Vitamin D: vitamin D deficiency is associated with greater risk of developing PTSD after traumatic exposure (Beydoun et al., 2021, British Journal of Nutrition). The proposed mechanism: vitamin D modulates the cortisol response and has anti-inflammatory effects on brain microglia. Probiotics: the altered gut microbiome in PTSD responds to probiotics (Lactobacillus and Bifidobacterium): some preliminary studies show reduction in anxiety and hypervigilance with probiotic supplementation, probably mediated through the vagus nerve.

Intuitive eating in trauma recovery: a complementary approach

Intuitive eating (Tribole and Resch, 1995, revised 2020) is an approach to nutrition based on listening to bodily signals of hunger and satiety, without external rules, restrictions, or moral judgments about food. For people with PTSD (especially those with body trauma that has produced dissociation from bodily signals), intuitive eating integrated with trauma therapy offers a tool to: reconnect with bodily signals of hunger and satiety (dissociated from trauma), reduce rigidity and food control (often defenses against post-traumatic insecurity), restore a relationship of trust with the body (which trauma has betrayed), practice self-compassion in eating (countering the severe self-criticism common in PTSD). Important note: intuitive eating in the context of trauma should be practiced with the support of a therapist specialized in trauma and eating disorders, not as autonomous self-management. The disconnection from bodily signals typical of PTSD can make the intuitive approach counterproductive without appropriate professional support. The journey is gradual: reconnection to the body requires the same type of patient and gentle work that characterizes all trauma therapy.

Resources for PTSD and mental health in Italy

Centro per la Cura del Trauma (CCPT): Italian network of centers specialized in PTSD treatment with evidence-based approaches (EMDR, trauma-focused CBT). Available in major Italian cities. EMDR Italia (emdr.it): the Italian association of EMDR therapists. The site has a search function for certified EMDR therapists by region. EMDR (Eye Movement Desensitization and Reprocessing) is one of the treatments with the strongest evidence for PTSD according to WHO and NICE guidelines. Centro Studi e Ricerche sulla Victimology (University of Turin): research and training on trauma. SINPF (Italian Society of Neuropsychopharmacology): produces updated guidelines for PTSD treatment in Italy, including pharmacological indications (SSRIs such as sertraline and paroxetine are first-line drugs for PTSD according to guidelines). Associazione per la Ricerca sulla Psicosi (ARP): support for people with serious psychiatric disorders. Telefono Amico / Telefono Azzurro: support during crisis phases. Telefono Amico (02.2327.2327) offers listening and guidance to mental health resources. Important: PTSD requires specialized treatment. Nutritional self-medication is not sufficient and is not safe as the only approach. Always seek the support of a psychotherapist specialized in trauma.