Are you fed up of feeling bloated and uncomfortable and looking 6 months pregnant
a couple of hours after eating a meal? Let us help you beat the bloat and get your life back.

IBS isn't a diagnosis. It's a vague term doctors use when they don't really know what's wrong with you. IBS is a catch-all term and label for a range of different issues, not a diagnosis or root cause. Which is why you find yourself haphazardly treating symptoms and jumping from programme to programme, which offers no long term relief.
The most likely cause of your bloating and symptoms is...
S.I.B.O.
(small intestinal bacterial overgrowth)
or
A Yeast infection
(such as Candida Albicans).
Book a free consultation with Calum to discuss your symptoms, struggles and treatment options.
Book a free consultation with Calum to discuss your
symptoms, struggles and treatment options and
find out more about the IBS Reset Clinic.
Receive your at-home stool test kit and full instructions for how to complete. Identify the root cause of your IBS.
Receive your at-home stool test kit and full instructions
for completion. This clinical grade test will help you
identify the root cause of your IBS & bloating.
Fully personalised to your stool test results, the IBS Diet Plan has proven to be 100% effective at reducing bloating and IBS symptoms for hundreds of women.
Fully personalised to your stool test results, the
IBS Diet Plan has proven to be 100% effective at reducing
bloating and IBS symptoms for hundreds of women.
Receive personalised guidance and support directly from Calum for the duration of your programme, ensuring you get guaranteed results.
Receive personalised guidance and support directly
from Calum for the duration of your programme,
ensuring you get guaranteed results.
My name is Calum, founder of GC Biosciences and I've been helping women find and fix the root cause of IBS, and beat bloating for over 13 years. And I want to help you too, which is why I created the IBS Reset Clinic. For a limited time I'm offering you a free initial consultation with me, where we'll talk through your symptoms, your struggles and make sure this programme is right for you.
My name is Calum, founder of GC Biosciences and I've been helping women find and fix the root cause of IBS, and beat bloating for over 13 years. And I want to help you too, which is why I created the IBS Reset Clinic. For a limited time I'm offering you a free initial consultation with me, where we'll talk through your symptoms, your struggles and make sure this programme is right for you.


"I'm pain-free, feeling
amazing inside and out"
After years of going through the process and seeing no improvement of my gut health I was getting increasingly desperate. I am now pain free, feeling amazing inside and out and I couldn’t thank these guys enough for their expertise and knowledge in helping me heal. I couldn’t recommend these guys highly enough!"
- Stacie Nickless


"I finally feel like
myself again."
"Hands down the best decision I have made for my health ever!! After battling with persistent pain and intense exhaustion for the last 2 years - which was only getting worse over time and would leave me bed bound for 2-3 weeks at a time, I am thankfully finally free again."
- Eugenia Owusu


"Reduced chronic inflammation
after 3 years of suffering."
"I can't say how pleased I am and that I found the team after 3 years of suffering from a range of symptoms and being misdiagnosed by GP's and various consultants. I have literally been back and forth on hospital visits to try and establish the cause of my chronic inflammation which has significantly impacted my life."
- Fiona Dobbs

See answers to our most common questions below. If we haven't answered your question here,
feel free to send it to us using the chat widget in the bottom right corner of the page.
The most common causes we see are SIBO (small intestinal bacterial overgrowth) or yeast infections (such as Candida Albicans). There can of course be other causes, which is why we use a clinical grade stool test to uncover the root cause of your IBS and bloating.
Our Comprehensive Digestive Analysis is an advanced, clinical-grade stool test that provides a complete assessment of digestive health, gut microbiome balance, and gastrointestinal function. Our stool test evaluates bacteria, yeast, parasites, and relevant functional gut markers. This includes molecular DNA testing and culture-based methods, which together give a more complete picture of the gut environment than either measured alone. This dual approach is one reason we prefer it, as it goes beyond a simple diagnostic and supports a highly personalised treatment strategy. It offers valuable insights into how well the digestive system is working and identifies potential imbalances that may contribute to symptoms such as bloating, fatigue, food sensitivities, or poor nutrient absorption. Once you sign up for the IBS Reset Programme, we’ll post the stool test kit directly to you, along with full instructions for completion at home. Once completed, you’ll post the samples directly to the lab in pre-paid packaging, and we’ll handle the rest.
The free initial consultation is a 30-minute video call held on Google Meet (a link to join will be sent with the confirmation email when you book your consultation). Alternatively, if you’d prefer, one of our IBS experts can call you directly on your phone. The initial consultation allows you to discuss your symptoms, struggles and medical history with a GC Biosciences expert, receive personalised recommendations, and find out more about our IBS Reset Programme. This is NOT a sales call and you are under no obligation to purchase anything on the call. Please only book a call if you are serious about getting to the root cause of your IBS, and don’t waste the precious time of our expert consultants.
With over 14 years experience helping thousands of men and women get to the root cause of their symptoms and optimise their health, digestion and wellbeing, Calum Gore also holds multiple nutrition and fitness qualifications, as well as advanced degrees in: Clinical Nutrition, Biochemistry and is currently a PhD postgraduate researcher at the University of Leicester, studying Cardiovascular genetics, specifically telomere length, and its effects on vascular smooth cells. Along with co-founder Dr Rob Corney, Calum oversees a multi-disciplinary team including medical doctors, nutritionists, health and exercise coaches.
The IBS Reset Programme is a comprehensive, 12-week programme currently priced at £850. You can either pay in full at the beginning of the programme, or split the payment in to two instalments (paying £425 up front and the second instalment of £425 after 30 days). The programme includes: your clinical grade stool test, a detailed results report, a results consultation, personalised nutrition, supplement and treatment plans (including pharmaceutical treatments if indicated) all based on your results, and 12-weeks of personalised support and guidance from your dedicated GC Biosciences consultant. In total you’ll get 4 x 1-hour video consultations with your consultant and unlimited text and email support from the team.

During his time as a highly qualified and sought-after personal trainer and nutritionist, Calum Gore first envisioned a company that could use valuable laboratory results to benefit clients. Having qualified as a health scientist, Calum began working with clients in London and formed GC Bioscienes in 2013. In addition to his degrees in Clinical Nutrition and Biochemistry, Calum is also a PhD postgraduate researcher at the University of Leicester, studying cardiovascular genetics, specifically telomere length, and its effects on vascular smooth cells. It is Calum‘s passion to help busy men and women uncover the root causes of their symptoms and find effective, long-term relief, so they can live longer, healthier lives.


Established in 2013 by founders, Calum Gore and Dr. Rob Corney, GC Biosciences is dedicated to meeting the needs of clients and patients seeking to reduce disease risk and increase longevity, optimise their health and energy levels, enhance performance and improve body composition. We harness both traditional and innovative laboratory testing, precision medicine and health coaching to craft precision health and nutritional solutions and programmes fully individualised to our client’s unique needs and biology. Calum and Rob lead a dedicated team of interdisciplinary professionals including: doctors, nutritionists, lab technicians and health coaches. Using advanced blood analysis and lab-testing and data-driven insights, we collaborate closely to create tailored and evidence-based programmes and lifestyle interventions for each client. Our ultimate aim is to empower our clients to live longer, healthier lives through the personalised programmes we develop.

GC Biosciences Ltd.
Kemp House, 152-160 City Road, London, EC1V 2NX
Company Reg No: 08346259
Copyright 2025. GC Biosciences. All Rights Reserved.