Adults / Food allergies & intolerances / Histamine intolerance and MCAS
FOOD INTOLERANCES · HISTAMINE AND MCAS
Histamine intolerance and MCAS nutrition support
Careful, evidence-based dietary support for histamine-related symptoms, without unnecessary long-term restriction.
Online across the UK and worldwide
HCPC-registered dietitians
4.9/5 from 119 Google reviews
All consultations online
Secure video, wherever you are
Understanding histamine-related symptoms
Histamine intolerance is a proposed condition in which histamine from food builds up faster than the body can break it down, possibly causing flushing, headaches, a blocked nose or gut symptoms. The evidence is still developing and there is no single reliable test.
Mast cell activation syndrome (MCAS) is a mast-cell disorder, not a food intolerance. Mast cells release histamine and other substances, causing symptoms in several body systems. It should be diagnosed and managed by a specialist doctor, usually with medication. Diet may help some people alongside medical treatment.
A dietitian can help you try a short, structured low-histamine trial if appropriate, identify personal triggers and then widen your diet again, so you do not stay on an unnecessarily restricted diet.
How we can help
Structured trials, then reintroduction.
01
Symptom assessment
Reviewing your symptoms and history, and when specialist assessment is needed.
Symptom diary
Red flags
Referral
02
Short low-histamine trial
A time-limited trial, where appropriate, to see whether diet affects your symptoms.
03
Reintroduction
Bringing foods back to find your personal tolerance.
04
MCAS alongside medical care
Dietary support that complements your specialist's treatment plan.
05
Nutritional adequacy
Protecting your nutrition if your diet has become limited.
06
Avoiding unreliable tests
Guidance on tests and supplements that lack evidence.
Who this is for
Adults with suspected histamine intolerance
Adults diagnosed with MCAS by a specialist
People with flushing, headaches or gut symptoms linked to food
People already on a restricted low-histamine diet
People with several suspected food intolerances
People who want an evidence-based second opinion
How it works
Three simple steps, all online.
Book
Choose an initial consultation, or start with a free discovery call.
1
Meet your specialist
A 60-minute video consultation to understand your health and goals.
2
Get your plan
A clear, personalised plan, with follow-ups to review progress.
3
Initial consultation
£159
60 minutes
Follow-up
£89
45 minutes
Follow-up packages
from £79
per session, 4 to 12 sessions
Personalised meal plan
£75
where clinically needed
Not sure who to see?
We match every enquiry to the right specialist on our team.
Questions
Is there a test for histamine intolerance?
There is no single reliable test. Diagnosis is based on symptoms, ruling out other causes and response to a structured dietary trial.
Is MCAS a food intolerance?
No. MCAS is a mast-cell disorder diagnosed by a specialist doctor and usually treated with medication. Diet can support medical treatment for some people.
Should I follow a low-histamine diet long term?
Usually not. We use short trials followed by reintroduction to avoid unnecessary restriction.
Can you diagnose MCAS?
No. We work alongside your doctor or specialist, who makes the diagnosis.
Are consultations online?
Yes. All consultations are by secure video, across the UK.