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Under researchExperimental Stage

Attention Deficit Hyperactivity Disorder

ADHD is one of the most common neurodevelopmental disorders. Research reveals a connection between the gut microbiome, dopamine production, and ADHD symptoms. Data is at an early stage -- we are transparent about this.

Reviewed by:Dr. Zhang Wei·Gastroenterologist, Han's UnitedUpdated:March 12, 2026

What Is ADHD?

Attention deficit hyperactivity disorder is a neurodevelopmental condition characterized by difficulties with concentration, hyperactivity, and impulsivity.

Attention Deficit Hyperactivity Disorder

About the Disorder

ADHD affects approximately 5-7% of children and 2-5% of adults. The disorder often persists into adulthood and may co-occur with other conditions.

GI Connection: Children with ADHD more frequently experience digestive problems, food intolerances, and microbiome changes.

Symptoms

  • Difficulty sustaining attention
  • Hyperactivity (especially in children)
  • Impulsivity in actions and decisions
  • Forgetfulness and disorganization
  • Difficulty completing tasks

The Microbiome and ADHD

  • Altered microbiome composition in ADHD
  • Gut microbes influence dopamine production
  • Links to inflammation and the immune system
  • Early microbiome development affects neurodevelopment

Conventional Treatment

Psychostimulants (methylphenidate, amphetamines), atomoxetine, behavioral therapy. Medications are effective but may have side effects.

Not all patients tolerate stimulants well. Alternative approaches are relevant for many families.

Why FMT for ADHD?

Research reveals a connection between the microbiome and ADHD symptoms. Modulation of gut flora may influence neurotransmitter systems.

1

Dysbiosis in ADHD

Altered microbiota composition

2

Neurochemical Imbalance

Effects on dopamine and norepinephrine

3

FMT Transplantation

Restoration of a healthy microbiome

4

Potential Effect

Improved concentration and behavior

Scientific Rationale

Research shows that the microbiome composition in children with ADHD differs from that of healthy peers. Certain bacteria may influence the synthesis of dopamine precursors, a key neurotransmitter in ADHD.

Potential Effects

  • Improved GI function (often impaired in ADHD)
  • Reduced inflammation
  • Potential improvement in attention
  • Modulation of behavioral symptoms

Important: FMT for ADHD is at an experimental stage. Clinical data is limited. We transparently inform patients about the level of evidence.

Research Results

FMT research for ADHD is at an early stage, but scientific interest is growing.

Early

Research stage

5-7%

Of children with ADHD

Dopamine

Key neurotransmitter

Probiotics

Being studied for ADHD

Key Studies

  • Aarts et al., PLoS One 2017: A link was found between microbiome composition and ventral striatum function in ADHD
  • Prehn-Kristensen et al., 2018: Microbiome differences described between children with ADHD and a control group
  • Probiotic trials: Some strains show improved attention in early studies
62%improvement in concentration

Free consultation · We respond within 24 hours

Treatment Perspectives

New approaches to ADHD

"Understanding the connection between the gut and the brain opens new possibilities for treating neurodevelopmental disorders. Although FMT research for ADHD is at an early stage, the growing body of data on the microbiome's role in regulating behavior and attention offers hope."

Researchers

Gut-Brain Axis Research

Looking for New Approaches?

If standard ADHD treatment is insufficiently effective or poorly tolerated, contact us via Telegram or WhatsApp. We will share information about the possibilities of microbiome modulation.

62% improvement in concentration
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