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What you eat shapes your entire mental health.

The gut brain axis is one of the most powerful communication systems in the body. Every food choice sends an immediate biochemical signal that shapes how your brain feels and functions. Jake specialises in mental health nutritional therapy for eating disorder recovery and ADHD. Having rebuilt his own mental health from the ground up, he knows the exact nutrition formula that works.

5yrs

Clinical experience

5.0 Rating

From 140+ verified reviews

Eating disorders Anorexia nervosa Bulimia nervosa ADHD Underweight Food restriction

Nutrition therapy Eating Disorders & ADHD

Jake works across the full spectrum of eating disorders and ADHD with a significant nutritional dimension. Every plan is clinician designed, evidence based, and completely customised.

Eating Disorders

Nutrition therapy is essential for recovery across all eating disorders. Key micronutrients such as B vitamins for neurotransmitter synthesis, magnesium for nervous system regulation, zinc for appetite, and mood signalling, iron for energy and cognitive clarity and omega 3 fatty acids for brain function play a critical role in this process. Evidence based nutritional care provides the structure and consistency required for clients to heal physically and psychologically, creating the conditions for long term recovery. Jake provides this level of care as an eating disorder nutritionist, delivering precise, clinically grounded therapy that supports lasting change.

ADHD

ADHD is deeply influenced by nutritional biochemistry, and targeted nutrition therapy plays a critical role in supporting focus, emotional regulation, and executive function. Nutrients such as iodine for thyroid driven cognitive speed, copper for dopamine and norepinephrine balance, vitamin B6 for neurotransmitter conversion, manganese for synaptic signalling and phosphatidylserine for working memory and stress regulation all contribute to clearer thinking and steadier behaviour. As an ADHD nutritionist, Jake provides evidence based nutritional therapy that strengthens the gut brain axis, supports neurotransmitter balance and enhances the brain’s capacity for focus, clarity and long term cognitive resilience.

Your gut produces 90% of your serotonin.

The gut brain axis is a direct, two way communication system linking the gut microbiome with the brain. In eating disorders and ADHD, this system becomes highly sensitive. Gut dysbiosis can amplify neuroinflammation.

Specific nutrient deficiencies can disrupt neurotransmitter production. Blood sugar instability can create anxiety like symptoms. Low omega 3 intake can impair neural function. These are mechanisms, and they can be addressed through clinical nutrition.

Jake’s mental health nutrition approach begins with a detailed assessment of the nutritional, gut health, and metabolic factors most likely driving your presentation, then builds a targeted plan to correct them.

90%

Of serotonin is produced in the gut

Serotonin is a neurotransmitter in the brain that controls mood, emotions and behaviours

98%

Of people with eating disorders experience clinically significant gastrointestinal symptoms

Direct consequences of malnutrition and disrupted gut brain communication

80%

Of people with ADHD have at least one nutritional deficiency

Iron, zinc, magnesium, and omega-3s are the most commonly implicated, all directly affecting dopamine and noradrenaline regulation

Signs your mental health needs nutritional support

Depleted energy levels

Chronic under fuelling impairs metabolic rate, cognitive speed, emotional stability, and physical resilience.

Low mood

A persistent emotional heaviness that reduces motivation, optimism, and the ability to experience pleasure or satisfaction.

Poor concentration

Difficulty holding attention, processing information, or staying mentally anchored, especially during tasks requiring sustained focus.

Inability to sleep

Racing thoughts, emotional tension, or cognitive overstimulation that make it hard to fall asleep or stay asleep.

Brain fog

A dull, clouded mental state marked by slowed thinking, forgetfulness, and reduced mental sharpness.

Persistent worry

A constant mental hum of what‑ifs, worst‑case scenarios, and future‑focused fear.

Racing thoughts

Fast, scattered thinking that jumps between concerns without resolution.

Loss of appetite awareness

An absence of internal prompts that normally guide eating, replaced by uncertainty or indifference.

Experiencing more than two of these? Book a consult →

Mental health nutrition, done properly.

Jake’s mental health nutrition approach goes straight to the mechanisms. He maps the biochemical, gut, and metabolic drivers shaping mood, focus, stress tolerance, and emotional regulation, then builds a precision plan that corrects the root causes rather than managing the surface symptoms. This applies directly to both eating disorders and ADHD, where physiology and neurobiology strongly influence daily functioning.

01

Full mental health & nutritional assessment

A thorough review of your symptoms, timeline, current treatments, diet, gut health, sleep, and bloodwork, building a complete picture of the nutritional factors contributing to your mental health.

02

Gut-brain axis optimisation

The gut microbiome directly influences neurotransmitter production, neuroinflammation, and the stress response. Jake addresses gut health as a primary lever for mental health improvement.

03

Neurotransmitter precursor nutrition

Targeted dietary strategies to ensure adequate precursors for serotonin, dopamine, noradrenaline, and GABA: including tryptophan, tyrosine, B vitamins, iron, and zinc.

04

Evidence-based support

Jake and yourself develop your short and long term mental health goals with clinical precision, creating a clear direction that drives your progress and anchors every step of your plan.

05

Ongoing monitoring & support

Ongoing support is fundamental for optimal mental health. You and Jake stay connected through regular check‑ins that keep your progress on track, and you also receive unlimited text message support so you never feel alone between sessions.

Jake Square

Jake Biggs

Mental health nutrition questions, answered.

Can’t find what you’re looking for? Get in touch and we’ll help.

Nutrition does not replace medication or psychological treatment.

Each plays a different role in your mental health. Nutrition stabilises your biochemistry, supports neurotransmitter balance, improves energy and emotional regulation and reduces the physiological stress that can intensify symptoms.

Medication and psychological care address the medical, behavioural and cognitive aspects of your mental health.

Nutrition strengthens the foundation so your medical and psychological treatment can work more effectively and you feel more stable day to day.

Yes. Jake works collaboratively with health care professionals. Your mental health team manages diagnosis, medication, therapy and clinical monitoring. 

Jake focuses on the nutritional, metabolic and gut brain factors that influence mood, energy, emotional regulation and day to day stability. 

When these areas are aligned, your treatment becomes more effective, your symptoms feel more predictable and you gain a clearer sense of progress.

Jake works with a wide range of mental health conditions, with a strong clinical focus on eating disorders and ADHD across all ages.

His expertise includes anorexia nervosa, bulimia nervosa, binge eating presentations, eating disorder not otherwise specified, body dysmorphia and exercise addiction.

He also provides specialised ADHD nutrition therapy for adults, teenagers and children, supporting emotional regulation, focus, energy and day to day stability.

Most clients begin noticing meaningful changes within the first few weeks, especially around eating disorder recovery and ADHD stability. 

For eating disorders, early shifts often include more predictable eating patterns, reduced food anxiety, steadier energy and fewer extremes in hunger, fullness or compensatory behaviours. 

For ADHD, improvements commonly show up as clearer focus, better emotional regulation, more consistent appetite and smoother day to day routines.

Yes. Jake works with both children and teenagers. His approach is developmentally appropriate, clinically structured and tailored to the unique nutritional, metabolic and emotional needs of young people. 

He supports children and teens with eating disorders, ADHD, anxiety related eating patterns, gut issues and general nutrition challenges, while working closely with parents and existing healthcare providers so progress feels coordinated, safe and consistent.

No. You do not need a diagnosis before seeing Jake for mental health support.

Many adults, teenagers and children come to Jake because they’re experiencing symptoms, patterns or struggles but haven’t yet received a formal diagnosis, or are unsure whether one is needed.

What you eat shapes your mental health in real time.

Jake is recognised as a world expert in mental health nutrition, specialising in eating disorders and long‑term recovery. His work sits at the intersection of biochemistry, gut‑brain science, and psychological resilience, giving clients a level of clarity and direction rarely found in traditional treatment. He brings world‑class clinical expertise, deep experience across the full spectrum of eating disorders, and a precision‑driven approach that restores stability, nourishment, and long‑term mental wellbeing.

Other ways Jake can help

Weight Loss

Sustainable weight loss nutrition plans to achieve your goal weight and keep it for life.

Sports Nutrition

Peak performance sports nutrition plans for teenagers, youth athletes, and adults to reach optimal performance.

Clinical Nutrition

Personalised nutrition plans for gut health, eating disorders, osteoporosis, adrenal fatigue, and more.