Yellow 5 (Tartrazine) in Indian Processed Foods: What the Evidence Actually Shows

A recent study found that a significant share of Indian processed foods contain Yellow 5 (Tartrazine), a synthetic dye used to enhance colour in everything from beverages to snacks. It's important to be precise about its legal status from the outset: Tartrazine is legally permitted in India — this isn't a banned or illegal ingredient — but the way it's regulated differs meaningfully between India and other major markets, and that difference is worth understanding rather than a blanket "cancer risk" framing.

FSSAI permits Tartrazine (INS 102) in food at a maximum usage limit of approximately 200 parts per million (ppm), depending on the food category. India is one of eight countries that FSSAI's own regulatory framework permits to use all eight synthetic colours it authorises: Tartrazine, Carmoisine, Sunset Yellow FCF, Brilliant Blue FCF, Ponceau 4R, Allura Red, Erythrosine, and Indigo Carmine. By contrast, the EU requires a mandatory warning label — "may have an adverse effect on activity and attention in children" — on any product containing Tartrazine and five related dyes (the "Southampton Six"), following the 2007 Southampton study. The US permits Tartrazine (as FD&C Yellow No. 5) with a labelling requirement to name it specifically (unlike some other dyes that can be grouped under "artificial colours"), but no hyperactivity warning. India requires neither a specific hyperactivity warning nor mandatory individual dye naming beyond standard INS-code declaration.

Tartrazine is most commonly found in: yellow and green-tinted carbonated and non-carbonated beverages, custard powders, yellow-coloured candies and boiled sweets, some namkeen and snack seasonings, and flavoured dairy products like certain ice creams and yogurt drinks. Checking for "Tartrazine" or "INS 102" (or "E102") on the ingredient list is the direct way to identify it, since front-of-pack marketing rarely mentions specific colour additives by name.

The strongest, most consistently cited evidence on Tartrazine relates to behaviour, not cancer specifically: the 2007 Southampton study (published in The Lancet) found that mixtures of artificial food colours, including Tartrazine, increased hyperactivity in children in a double-blind trial — this is the basis for the EU's warning label requirement. On cancer risk specifically, the evidence is less settled than some consumer content suggests; Tartrazine is not currently classified by IARC as a carcinogen, and claims to that effect should be treated cautiously. Tartrazine is, however, a documented allergen — it can trigger allergic and asthmatic reactions in a subset of sensitive individuals, particularly those with aspirin sensitivity, which is a separate and well-established concern from the cancer question.

Children are the group with the strongest documented evidence of harm, via the hyperactivity/attention link established in the Southampton study — which is exactly why the EU's warning label targets children's attention and activity specifically. Individuals with known sensitivity to Tartrazine or aspirin-sensitive asthma should also be cautious, given the documented allergic-reaction risk. Pregnant women and breastfeeding mothers may reasonably choose to minimise exposure to synthetic dyes generally as a precaution, though the strongest specific evidence relates to childhood behaviour and allergic sensitivity rather than pregnancy outcomes.

AaharIQ's food scanner app can help you identify Tartrazine and other synthetic colours in Indian processed foods. Simply scan the label of a product, and AaharIQ's AI-powered algorithm will detect the presence of Tartrazine and flag it against your health profile — particularly useful if you're managing a child's diet or have a known sensitivity. Get started with AaharIQ today and take control of your food choices — download the app for free at aahariq.com.