The science behind Aliqa

Last reviewed 14 May 2026

Aliqa is a food-logging app, not a medical device. It applies established public-health frameworks across three scoring dimensions to score each day. The frameworks are independent of Aliqa, and citation here is not an endorsement of Aliqa by their authors or the issuing bodies. Aliqa does not provide medical, nutritional, or psychological advice; always consult a qualified healthcare professional before changing your diet.

How Aliqa scores a day

Each day is scored on three dimensions, each on a 1–10 scale, for a composite of 3–30. Every dimension applies an established public-health framework that has its own evidentiary basis and, in several cases, regulatory standing. Aliqa is the delivery mechanism for these frameworks: the scoring engine encodes their guidance and turns it into a daily score and short recommendation.

Dimension 1 - Glycemic Balance

How well sweet and starchy foods are paired with protein, fibre, and healthy fat across the day, and how often isolated sugar (juice, soda, sweet snacks) appears outside a meal context.

What it rewards: sweet or starchy foods paired with protein, fibre, or fat that slow glycemic response (the ICQC consensus position); meals that combine sources rather than presenting sugar in isolation.

What it penalises: isolated added sugar (sugary drinks, sweet snacks without a fibre/fat/protein companion), and high glycemic-load items eaten outside a balanced meal context.

Frameworks Aliqa applies:

  • ICQC 2015 - International Scientific Consensus on Glycemic Index, Glycemic Load and Glycemic Response (Augustin et al., Nutrition, Metabolism & Cardiovascular Diseases). Widely cited consensus statement on GI/GL.
  • ISO 26642:2010 - international standard for in-vivo determination of glycemic index. Methodological backing.
  • International GI/GL tables 2021 (Atkinson et al., American Journal of Clinical Nutrition). The reference dataset used across the field.
  • Diabetes UK - Glycaemic index and diabetes. UK patient-facing low-GI guidance.
  • WHO 2015 - Guideline: Sugars intake for adults and children. Strong recommendation to reduce free-sugar intake to less than 10% of total energy; conditional recommendation for less than 5%.

Dimension 2 - Meal Composition

Whether each main meal contains the structural elements UK and international plate-composition guidance asks for: vegetables, a portion of protein, and whole rather than refined grains. Legumes are explicitly valued.

What it rewards: vegetables at every main meal; a portion of protein at every main meal; whole grains preferred over refined; legumes; food-group variety.

What it penalises: main meals missing a protein source or missing vegetables; refined-carb-only meals.

Frameworks Aliqa applies:

  • NHS Eatwell Guide - UK national dietary guidance (OHID, originally Public Health England, 2016).
  • Harvard Healthy Eating Plate - Harvard T.H. Chan School of Public Health.
  • EAT-Lancet Commission 2019 - Food in the Anthropocene (Willett et al., The Lancet). Leading consensus statement on healthy meal patterns at a global scale.
  • EAT-Lancet 2.0 (2025) - Healthy, sustainable, and just food systems (Rockström et al., The Lancet, 2 Oct 2025). The second EAT-Lancet Commission, extending the 2019 reference diet.

Dimension 3 - Food Quality

How much of the day is whole foods - vegetables, fruit, healthy fats, omega-3 sources - versus ultra-processed foods and sugary drinks.

What it rewards: omega-3 sources (oily fish, walnuts, flax), healthy unsaturated fats, whole fruit and vegetables, plant-fibre drawn from multiple groups across the day (at least three of vegetables, legumes, whole grains, whole fruit), home-cooked food from recognisable ingredients.

What it penalises: ultra-processed items (NOVA group 4); sugary drinks; alcoholic drinks (flagged as a critical nutrient by the PAHO Nutrient Profile Model); reliance on diet products formulated with non-sugar sweeteners (WHO 2023 issued a conditional recommendation against non-sugar sweeteners for weight management, based on long-term observational evidence).

Frameworks Aliqa applies:

  • NOVA food classification (Monteiro et al., Public Health Nutrition). The processing-level taxonomy.
  • PAHO - Nutrient Profile Model. Pan American Health Organization (WHO regional office). PAHO maintains its own Nutrient Profile Model, applied alongside NOVA to identify ultra-processed products excessive in critical nutrients.
  • UK FSA Nutrient Profiling Model. UK-government nutrient-profile algorithm, developed by the FSA (2004-2005) and now maintained by DHSC; originally designed for Ofcom advertising rules and the basis of the Nutri-Score algorithm.
  • Nutri-Score - front-of-pack labelling derived from the FSA NPM, officially adopted in France, Belgium, Germany, Luxembourg, the Netherlands, Spain, and Switzerland (the COEN-7); we apply the updated 2023 algorithm.
  • WHO 2023 - Use of non-sugar sweeteners. World Health Organization conditional recommendation against non-sugar sweeteners for weight management, based on long-term observational evidence; underpins the diet-product penalty.
  • Reynolds A et al. 2019 - Carbohydrate quality and human health (The Lancet). Dose-response evidence on dietary fibre and cardiometabolic risk, supporting fibre drawn from a variety of plant foods rather than a single source.

What Aliqa does not claim

Aliqa applies these public-health frameworks but is not endorsed by their authors or the issuing bodies. Aliqa does not claim a clinical effect, does not diagnose, does not treat any condition, and does not replace advice from a qualified healthcare professional. The scoring is not a substitute for medical decision-making - see the Medical Disclaimer for the full position.

Influences and further reading

The popular literature on glycemic management has been shaped by researchers and clinicians whose ideas overlap with - but are not identical to - the public-health frameworks above. Aliqa was influenced by their work, but their work is not the basis of Aliqa's scoring engine and they have not endorsed the app. Inclusion below is editorial context, not a scientific consensus or endorsement of Aliqa:

  • Prof. David Jenkins (Toronto) - invented the glycemic index, 1981.
  • Prof. Jennie Brand-Miller (Sydney) - co-author of the international GI/GL tables.
  • Dr David Ludwig (Harvard) - carbohydrate-insulin model of obesity.
  • Dr Robert Lustig (UCSF) - clinical work on added sugar.
  • Dr Jason Fung (Canada) - insulin resistance and fasting protocols.
  • Dr Arthur Agatston (USA) - meal-composition approach to glycemic stability.
  • Dr Mark Hyman (USA) - functional medicine and food quality.
  • Michel Montignac (France) - popularised GI-based meal composition.
  • Dr Yann Rougier (France) - popularises micro-nutrition and metabolic re-regulation.
  • Jessie Inchauspé (France) - educator on glucose curves and meal sequencing.
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