A public health emergency
Most of it hides in plain sight — ultra-processed food engineered to be irresistible. Do you actually know what's in your food? Scan any barcode and find out in seconds.
Free to download · 5 free scans included · No credit card
The truth
Dr Chris van Tulleken — infectious disease doctor and author of Ultra-Processed People — sat down with Steven Bartlett to explain why what we eat has become the biggest threat to our health.
higher risk of death from all causes with high ultra-processed food intake.
increased risk of heart-disease-related death linked to UPF-heavy diets.
of the average UK adult's calories now come from ultra-processed food.
Know your enemy
If it's wrapped in plastic and contains an ingredient you wouldn't find in a home kitchen, it's probably UPF. The world's leading nutrition scientists break it down.
Dr Chris van Tulleken × Prof Tim Spector — the truth about UPF and food addiction.
Prof Tim Spector explains how UPFs hijack your body — and how to spot them.
The science
NOVA is the classification used by nutrition scientists worldwide. It groups food by how processed it is — not calories, not fat. YAWYE uses it to score everything you scan.
Whole foods as nature made them — nothing added, nothing industrial. The foundation of a healthy diet.
Ingredients extracted from nature and used in kitchens for cooking real food — fine in normal amounts.
Simple foods preserved or combined with NOVA 2 ingredients — typically 2–3 recognisable ingredients.
Industrial formulations with additives, emulsifiers and flavourings you'd never find in a kitchen. Engineered to be over-eaten.
The problem? NOVA 4 foods are disguised as everyday staples. That "healthy" cereal, that wholemeal loaf, that fruit yoghurt — you can't tell by looking. But you can tell by scanning.
The answer
Point your phone at anything in the supermarket or your cupboard.
AI analyses every ingredient, flags UPFs, additives and hidden nasties — and scores it out of 10.
Safe Swaps suggests genuinely healthier alternatives to what you scanned.
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