Have you ever felt overwhelmed after eating certain foods?
Do you notice that your mood changes for no apparent reason?
Have you been told to "eat better" to feel good, but it's not that simple?
If these questions resonate with you, you may be experiencing how nutrition affects your mental and emotional health.
In this article, we explore the connection between nutrition and health beyond the physical,in neurodivergent individuals., debunking common beliefs and offering strategies based on scientific evidence.
“It's not just about what you eat, but how you feel when you do.”
— Geneen Roth
The connection between nutrition and mental health
The relationship between what we eat and how we feel is not anecdotal, it is biological.
And it not only influences our body, but also our emotions, attention, and internal regulation.
Neuroscience and nutritional psychiatry have confirmed that what we ingest directly impacts:
- Mood regulation
- Concentration ability
- Emotional resilience
- Stress response
Especially relevant in anxiety, depression, ADHD, autism, bipolarity, or sensory dysfunctions.
According to Harvard Medical School, the brain consumes between 20% and 25% of daily energy and directly depends on dietary nutrients.
Key nutrients such as B vitamins, omega-3, magnesium, tryptophan, and antioxidants promote the production of essential neurotransmitters (serotonin, dopamine, GABA).
In contrast, diets rich in ultra-processed foods or refined sugars increase inflammation, alter the gut microbiota, and spike cortisol.
This is related to the gut-brain axis, a complex network that connects the gut and the nervous system through the vagus nerve, the microbiota, and the immune system.
“The gut is the second brain.”
— Michael Gershon (neurogastroenterologist, pioneer in the study of the enteric nervous system)
What does this imply for neurodivergent individuals?
Neurodivergence introduces sensory, metabolic, and emotional variations that affect the relationship with food:
- Oral hypersensitivity or hyposensitivity (texture, temperature, taste)
- Functional gastrointestinal disorders (irritable bowel, constipation, intolerances)
- Chronic low-grade inflammation
- Altered metabolic and circadian rhythms
- Cycles of emotional or restrictive eating (masking, anxiety, shutdown)
Examples:
- In autism, digestive anxiety can lead to preventive food rejection.
- In ADHD, executive dysregulation can cause forgetfulness or eating without a sense of fullness.
- In highly sensitive individuals or those with BPD, foods with intense sensory or emotional load can cause nausea, sadness, or anxiety.
“It's not that we eat strangely, it's that we feel differently.”
— Verònica Martín
Common myths about food and neurodivergence
Myth 1: "Autistic individuals are picky eaters out of whim."
Reality: Preferences often have a sensory or digestive basis.
Myth 2: "A healthy diet is enough to address neurodivergent conditions."
Reality: It is a pillar, but it does not replace psychological or medical support.
Mite 3: "Emotional eating is only a thing for adults."
Reality: The emotional bond with food begins in childhood. Rewards, punishments, and manipulation deeply mark it.
What happens in the brain?
When I wrote "Stomach calling to head, are you receiving me?" together with Patricia Esteban, I discovered how much nutrition influences mental health through multiple interconnected systems.
It's not just about nutrients, but how the nervous system interprets and responds to what we eat.
1. Gut-brain axis
The intestine produces more than 90% of the body's serotonin and houses millions of neurons.
The gut microbiota regulates digestion, mood, attention, and stress.
Dysbiosis (bacterial imbalance) is associated with:
- Irritability
- Mental confusion
- Mood swings
- Anxiety
- Depression
The intestine is, literally, our “second brain”.
2. Key neurotransmitters and nutrients
Certain foods contain precursors of neurotransmitters:
- Tryptophan → Serotonin
- Phenylalanine / Tyrosine → Dopamine
- Glutamine → GABA
- Omega-3 → Brain plasticity, emotional memory
Deficiencies of these nutrients can affect the emotional self-regulation, especially in profiles with a different neurological basis.
3. Chronic low-grade inflammation
Diets rich in:
- Refined sugars
- Trans fats
- Additives and ultra-processed foods
...cause inflammatory processes that alter neuronal communication and synaptic plasticity.
This is critical for autistic individuals, those with ADHD, or mood disorders.
4. Brain areas involved in the eating experience
Insula
Interoceptive center. Detects hunger, fullness, nausea, desire. Can be hyperactivated or disconnected.
“I don't know if I've eaten enough. I just feel anxious.”
Amygdala
Associates food with threat or pleasure. In neurodivergences, it can trigger panic in response to certain foods.
Somatosensory cortex
Processes textures, temperature, pressure. In oral hypersensitivity, eating can be painful. In hyposensitivity, intense stimuli are sought.
Prefrontal cortex
Manages decisions, planning, impulse control. Its fatigue translates into difficulty organizing meals.
Cerebellum
Integrates stimuli and emotions. If it is overloaded, it may disconnect from internal hunger/satiation signals.
“The way we nourish ourselves is a reflection of how we accompany ourselves.”
—Integrative psychology
Strategies to improve nutrition and mental health
1. Include nutrient-rich foods
Fruits, vegetables, lean proteins, whole grains.
*Real note: my child only eats beige/white foods (potatoes, chicken, mayonnaise…). Many people eat by color.*
2. Avoid ultra-processed foods
Reducing sugars and trans fats decreases inflammation and improves mood.
3. Maintain regular schedules
Routine helps regulate emotions, especially in autism and ADHD.
4. Consult specialized professionals
Nutritionists and neurotherapists can tailor strategies to each profile.
5. Space design
Neuro-friendly kitchen = appropriate lighting, organization, calm environment.
(This is what we do at A-tipic Biointeriors.)
A personal story
As a child, I hardly ate.
Soft textures made me gag, the color green seemed dangerous to me. They forced me, I cried. No one listened to me.
Today I accompany my children with empathy, because I know how they feel.
Eating is not always a neutral act.
It can be a battleground...
Or a space for regulation and connection.
“No act of nourishment is worth it if it is not accompanied by connection.”
— Daria Funches (body and sensory therapist)
To summarize…
- There is no one correct way to eat.
- Nutrition must start from the body, from respect, from a kind environment
- Eating differently is not failing: it is feeling in another way
- Accompanying without forcing is key
- Food can also be safety, affection, autonomy
At ATÍPICS, we believe that what you feel is real.
You do not need to normalize anything.
Only understanding, science, and empathy.
🧡 Your way of eating, living, and feeling deserves a place where it fits.
And this place, little by little, we are building together.
With affection,
Verónica Martín
Co-founder of ATÍPICS