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Research & Innovation

“Everything we do at Circle of Light is founded on rigorous scientific research & centred on the guiding principle that FOOD INTEGRITY IS THE FOUNDATION OF LONGTERM WELL-BEING”

Integrity matters to us, both in terms of the nutrient value of our blends, and our reputation as a research-focused brand.

Our background is in science and academia, and our passion for providing effective ingredients in easy, drinkable form was inspired by a frustration with the information available to the consumer about the efficacy of the food they are choosing.

Our mission is to provide wholly natural, unprocessed and nutrient-dense food choices via our drinks, and to help educate people so they can make more informed choices about what they are consuming.

Over ten years of research and innovation have gone into developing our range of granulated drinks that deliver unrivalled, scientifically supported, health benefits – along with a unique & delicious taste.

Our journey has been one of exploration, with a scientific focus on extracting the unique benefits of each of our carefully selected ingredients.

We hope you enjoy our unique nutritious blends!

Dr Sarah Kelly, BSc.,MSc.,PhD.
CEO, Circle of Light


On our journey, we fostered relationships with respected experts across the fields of nutrition and physiology, to discuss and refine the ingredients we chose for our blends – and provide ongoing scientifically guided information.

We consult our experts about the natural benefits of the ingredients in our blends, and we are delighted that they are so generous with providing information that can help educate and inform beyond the general information the everyday shopper would normally have available. To hear more about our advisors, you can check out our blog and social media channels, where we aspire to provide a hub for educational segments from independent experts in their field.

Prof. Niall Moyna


Cardiovascular Health Expert.

A Professor at Dublin City University and a health expert on Operation Transformation. He has worked closely with the Dublin & DCU GAA teams, and other elite athletes over the years and is a leading voice in his field, lecturing worldwide on health and human performance.

Dr. Brendan Egan


Nutrition Expert.

Associate Professor of Sport and Exercise Physiology at the school of Health and Human Performance in DCU. His Research spans the areas of exercise physiology, nutrition, and molecular mechanisms of adaptation to exercise training across the life course, with special interest in athletes and healthy ageing. His group has performed numerous human studies over the past 15 years, investigating performance and adaptation in response to exercise, nutrition supplements and nutrition strategies.

Helen Keeble


Specialist Pelvic Health Physiotherapist.

Helen is the Clinical Lead & Director at pH physiotherapy, a prestigious pelvic health physiotherapy company that treats men and women across London & Dublin. She delivers courses and tutoring at the POGP (Pelvic, Obstetric and Gynaecological Physiotherapy). Helen was chosen as one of the official London 2012 Olympic physiotherapists.


Sophia Woods

‘The Facialist’

Skin care expert with over 20 years experience in the beauty industry, Sophia has worked in some of the leading clinics in London and global skincare houses.

Her private clinic, ‘The Facialist’ is located in Dublin.


Kathleen Ward


Herbal & Nutrition Expert with over 36 years private practice experience. Kathleen’s clinic in Co. Monaghan is a unique reputable centre offering specialist therapeutic disciplines from acupuncture to counselling and Antenatal classes.


Lorraine Maher


Specialist Gastroenterology Dietitian.

Clinical Dietician & Founder of the Gut Health Clinic (Blackrock Clinic), with over 20 years of diverse experience with roles in the HSE, commercial, private and research sectors. Co-Author of ‘Gut Feeling’ and ‘Low FODMAP’ recipe book and reference guide.

All advisors are independent. No money or benefits are exchanged for their contribution – they are offering their knowledge in the vein of collaborative education and health. 


“the unroasted coffee bean is one of the most nutritious fruits in the world”

“The green coffee bean is high in a number of active ingredients, particularly chlorogenic acid, which has widespread health benefits as an anti-inflammatory and anti-oxidant. Detailed scientific research has shown that chlorogenic acid can reduce cholesterol and blood pressure in those with elevated levels.” (Prof. Niall Moyna)

Prof Niall M. Moyna,
Clinical Exercise Physiologist with a focus on Chronic Diseases

Unroasted Green Coffee research. Natural remedy for high blood pressure and cholesterol.
*All Circle of Light ingredients are 100% natural and are not intended as a replacement for medication. Referenced studies and findings are peer reviewed in an academic context.


Non-Roasted Green Coffee Health Benefits

Roasting green coffee beans to produce traditional aromatic brown coffee destroys virtually all the green coffee nutrients.

At Circle of Light we preserve the integral properties of these nutrients by granulating the pristine green coffee beans to produce a uniquely refreshing drink. The traditionally ‘bitter’ taste of the green coffee bean is softened and naturally sweetened by prebiotic fibre, Inulin.

  • Chlorogenic and ferulic acid make up more than 50% of the dry weight of the green coffee fruit.
  • Chlorogenic and ferulic acid have been noted in academic studies to have promising, evidence-based health benefits for heart and skin. (See Studies Below)
  • Research shows that food rich in chlorogenic and ferulic acids can help support the ongoing management of blood pressure and cholesterol.
  • These organic compounds are antimicrobial, anti-inflammatory & antioxidant.
  • Ferulic acid is often employed in cosmetic products to protects cells in the skin structure (it is often referred to as ‘The Free Radical Scavenger’). In its food form it is easily absorbed and remains in the blood longer than other phenolic acids.


All listed studies are independently published and peer reviewed academic articles. They were not commissioned by, nor affiliated with, Circle of Light. Their findings concern the scientific properties of chlorogenic acid and ferulic acid as independent entities. They are not direct references to specific products sold by Circle of Light, or endorsed as medicinal guidelines.

Supporting blood pressure-lowering effects of green coffee.

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Supporting cholesterol-lowering effects of green coffee.

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Demonstrating that consumption of coffee beverages enriched in chlorogenic acids (CGAs) may influence blood pressure and endothelial function.

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The unroasted green coffee bean is rich in Ferulic Acid. This organic compound, when preserved in its original structure, contributes to the maintenance and repair of skin cell health. A potent antioxidant, it is easily absorbed when taken in food form – avoiding the rapid oxidation issue that often occurs when Ferulic Acid is used in ‘topical’ serums. It has been nicknamed ‘The Free Radical Scavenger’ for the role it has been noted to play in protecting cell health. (See Studies)


Journal of Clinical Biochemistry and Nutrition extract:
“FA exhibits a wide range of therapeutic properties like anti-inflammatory, antiatherogenic, antidiabetic, antiageing, neuroprotective, radioprotective and hepatoprotective effects […] regular ingestion of FA may provide substantial protection against various oxidative stress related diseases.”

Download full study here

Journal of Pharmacological and Biophysical Research extract:

“Ferulic acid is more easily absorbed into the body and stays in the blood longer than any other phenolic acids. Ferulic acid is considered to be a superior antioxidant [5]. Ferulic acid has low toxicity and possesses many physiological functions, including anti-inflammatory, antimicrobial, anticancer (for instance lung, breast, colon and skin cancer), anti-arrhythmic, and antithrombotic activity, and it also demonstrated antidiabetic effects and immunostimulant properties, and it reduces nerve cell damage and may help to repair damaged cells.”

Download full study here


Circle of Light drinks are high in Inulin, a natural prebiotic fibre derived from chicory root.

Our Green Coffee range is naturally sweetened with Inulin (giving it a softer, sweeter taste than traditional roasted coffee). TripleZ – our all natural herbal night drink – is enriched with Inulin & multivitamins, while our FIBRE89 range is composed of 89% Inulin.

What is Inulin?

Inulin is a soluble dietary fibre that is classified as a prebiotic. Extracted from the chicory root, it feeds friendly bacteria for optimal gut health.

Chicory is a blue flowering plant of the Dandelion family. Due to its pleasant taste, Inulin makes a nutritious, fibre-dense natural sweetener.

EFSA Approved

Inulin is European Food Safety Authority approved for constipation relief: ‘Chicory inulin contributes to normal bowel function by increasing stool frequency’.

Prebiotic Fibre & Gut Health

The impact of prebiotic fibre on Gut Health has been linked with fortifying immune response, improving energy levels & metabolism, as well as stabilising blood glucose levels.

The recommended daily allowance for fibre intake is between 24-35 gm per day. To meet this target, the average adult would need to be consuming a varied and balanced diet (fresh fruits, vegetables, pulses, lentils, beans).

What is the difference between Prebiotics & Probiotics?

For more information, check out ourFibre Series’ with Dr. Egan.


All referenced studies are independently published and peer reviewed academic articles. They were not commissioned by, nor affiliated with, Circle of Light. Their findings concern the scientific properties of inulin and prebiotic (soluble) fibre as independent entities. They are not direct references to specific products sold by Circle of Light, or endorsed as medicinal guidelines.

International Journal of Molecular Sciences extract:

Gut bacteria have been found to be involved in many diseases, such as IBD, obesity, diabetes, carcinoma, HIV, and autism. When the gut bacteria undergo some imbalance, several diseases may occur. Immunoregulatory activity is the main function of gut bacteria in the pathogenesis of these diseases. Diet-induced dysbiosis affects disease susceptibility, including IBD, diabetes, and obesity. In recent years, prebiotics and probiotics have been widely used in the treatment of some diseases and, have shown great effects.

Download full study here

Circulation Research Journal extract:

A high fiber diet was reported to increase acetate-producing microbiota, lower blood pressure and decrease cardiac hypertrophy and fibrosis.

Download full study here

Inulin-type fructans supplementation improves glycemic control for the prediabetes and type 2 diabetes populations – Journal of Translational Medicine extract:

Evidence supports that reasonable administration of ITF supplementation may have potential clinical value as an adjuvant therapy for prediabetes and T2DM management.

Download full study here

Scientific Reports Journal extract:

Ingestion of a prebiotic diet (Test diet) improves undisturbed non-rapid eye movement (NREM) sleep, promotes REM sleep rebound after stress exposure, and prevents stress-induced reductions in gut microbial alpha diversity.

Download full study here

Geburtshilfe Frauenheilkd extract:

Inulin, a prebiotic extracted from chicory roots, can improve intestinal microecology and physiological functions and has been shown to increase serum GLP-1 levels, reduce serum IL-6 levels, and normalize the intestinal microecology of diabetic rats 123 . This has led researchers to explore the therapeutic effect of prebiotics on PCOS.

Download full study here

British Medical Journal ‘Gut’

supporting vital role of gut microbiome in the immune response for COVID19 infection

Download Here

“Prebiotics serve as fuel for the microorganisms in the gut”

“We have begun to think of fibre as fuel or fertiliser for the microorganisms and bacteria that are present in the gut – which are called the gut microbiome. The amount & diversity of the fibre we consume has major effects on the health of this gut microbiome and therefore ultimately has effects on health & metabolism”

Dr. Brendan Egan,
Associate Professor of Sport and Exercise Physiology


“We know that 1 in 5 people suffer with constipation in Ireland.”

“Repetitive straining to open bowels can be worse than childbirth on the pelvic floor. Constipation can cause pelvic floor weakness/dysfunction leading to prolapse, incontinence, or sexual problems. Additional issues with constipation can be fissures (tears), haemorrhoids, pain, nerve problems, and reductions in self confidence/self-esteem.”

Helen Keeble
Specialist Pelvic Health Physiotherapist

One serving of FIBRE89 provides 1/5 of of your recommended daily fibre intake. While feeding the gut microbiome for overall health, the high fibre content also supports normal bowel function so you can regulate your system to a comfortable level.

NB – Both Men & Women can suffer from poor pelvic health!

FIBRE89 Ginger sparkling and hot in kitchen

All Circle of Light ingredients are 100% natural and are not intended as a replacement for medication.