US vs EU Food Safety: Why the Rules Are So Different

The US system: GRAS and the burden of proof problem

The US framework for food additive safety is built on a 1958 amendment to the Federal Food, Drug, and Cosmetic Act. Under this framework, food additives require FDA pre-market approval — except for substances "generally recognized as safe" (GRAS) by qualified experts based on scientific evidence.

The GRAS exemption was intended to cover common substances with long histories of safe use — salt, vinegar, sugar. Over decades, it has expanded considerably. Critically, in 1997 the FDA created a voluntary GRAS notification system under which manufacturers can notify the FDA that they have determined a substance is GRAS — but this notification is not a requirement. A manufacturer can self-determine a substance is GRAS and add it to food without any FDA notification or approval.

A 2010 Government Accountability Office (GAO) report estimated that over 1,000 substances were used in US food under GRAS determinations that the FDA had never reviewed. A Natural Resources Defense Council analysis put the number of "secret GRAS" substances potentially in the thousands. The FDA has acknowledged this gap and committed to reviewing GRAS determinations, but progress has been slow.

The EU system: pre-market authorization and the positive list

The EU food additive framework, primarily governed by Regulation (EC) No 1333/2008, operates from the opposite presumption: a substance may only be used in food if it is explicitly authorized and listed in the EU's positive list of permitted additives. If a substance is not on the list, it is not permitted — regardless of whether it has been shown to be harmful.

Before a new substance can be added to the positive list, the applicant (typically a manufacturer) must submit a comprehensive safety dossier to EFSA. EFSA's scientific panels evaluate the data and issue an opinion. The European Commission then decides whether to grant authorization. This process typically takes three to five years and is expensive — which is one reason the EU approved additive list has fewer entries than the US equivalent.

Existing approvals can also be revoked. EFSA conducts systematic re-evaluations of all food additives that were approved before 2009, working through the list category by category. If a re-evaluation reveals new safety concerns, EFSA issues an opinion that typically leads to lower use limits, new restrictions, or a ban. Titanium dioxide (E171) and brominated vegetable oil are recent examples of substances that went through this process.

The precautionary principle explained

The precautionary principle is enshrined in Article 191 of the Treaty on the Functioning of the European Union and in EU food law through Regulation (EC) No 178/2002. It states, in essence, that where scientific evidence is uncertain or insufficient and preliminary data suggests a potential hazard, protective measures can be taken without waiting for full scientific proof of harm.

Applied to food additives, the precautionary principle means that uncertainty is treated as a reason for caution rather than a reason to delay action. If EFSA cannot establish that a substance is safe — because the data is insufficient, contradictory, or shows possible harm at the nano or mechanistic level — the EU tends to restrict it.

The US approach does not have an equivalent legal principle embedded in food law. The FDA operates under a framework that requires evidence of actual risk to trigger regulatory action on an approved substance. Consumer advocates argue this creates a structural bias toward keeping substances approved even when evidence accumulates; industry advocates argue the US approach avoids costly and unnecessary restrictions on substances that have decades of safe use.

Additives where the US and EU differ

The following table shows additives where the US and EU have taken meaningfully different regulatory positions — either one jurisdiction banned it while the other permits it, or the two have taken sharply different approaches to labeling or restrictions.

View the full list of additives banned in Europe but permitted in the US.

Historical context: why the systems diverged

The US food safety framework was largely shaped by mid-20th century food policy designed to support a rapidly industrializing food system. Speed, innovation, and GRAS flexibility were features, not bugs. The FDA was designed to catch problems after they emerged, not to pre-screen everything before use.

The EU system was substantially rebuilt after a series of food safety crises in the 1990s, most notably BSE ("mad cow disease"). The European Food Safety Authority itself was established in 2002 explicitly in response to public loss of confidence in food safety governance. The new system was designed with the precautionary principle as a central organizing concept — a direct response to the BSE experience, where the UK government had reassured the public about safety for years before the risk became undeniable.

These historical contexts matter. The EU precautionary approach is not Europe being irrational; it is Europe having institutionalized the lesson of previous regulatory failures. The US GRAS system is not the FDA being negligent; it is a framework designed for a different era and a different regulatory philosophy.

Is either system better?

The honest answer is that both systems have legitimate strengths and real weaknesses. The EU system provides stronger pre-market screening but can be slow to authorize genuinely safe innovations and creates high barriers for new ingredients regardless of risk profile. The US system is more innovation-friendly but allows substances with limited safety data into the food supply for decades before systematic review.

What is clear is that the gap between the two systems has narrowed since the mid-2010s. The FDA has been more active on additive restrictions — banning trans fats, brominated vegetable oil, and Red Dye 3, and phasing out six synthetic dyes — than it had been in the previous two decades. Whether this convergence continues or reverses is a live regulatory question.