Why Folic Acid Is Being Added to UK Bread Flour in 2026

From December 2026, folic acid will be added to most non-wholemeal wheat flour sold in the UK. The government says the move could help prevent hundreds of cases of serious birth defects every year.

The change is an important public health measure, but it does not mean that women planning a pregnancy should stop taking folic acid supplements. Experts say supplementation before pregnancy and during the early weeks of pregnancy will remain essential.

So why is folic acid being added to UK flour, who will benefit and why are supplements still recommended?

What is folic acid and why is it important?

Folic acid is the synthetic form of folate, also known as vitamin B9. It is an essential nutrient that helps the body produce and maintain healthy cells.

Folate is particularly important during the earliest stages of pregnancy because it supports the development of the neural tube. This structure eventually develops into the baby's brain and spinal cord.

If the neural tube does not close properly, it can result in serious conditions known as neural tube defects. These include spina bifida and anencephaly.

Spina bifida occurs when the baby's spine and spinal cord do not develop fully. Anencephaly is a severe condition in which major parts of the brain and skull fail to develop.

These conditions can result in pregnancy loss, death shortly after birth or lifelong disability.

One of the biggest challenges is that the neural tube develops extremely early in pregnancy. It closes at around four weeks after conception, sometimes before a woman realises that she is pregnant.

This is why getting enough folic acid before conception is so important.

Why is the UK adding folic acid to flour?

The UK government has decided to introduce mandatory folic acid fortification of non-wholemeal wheat flour from December 2026.

Under the new policy, a small amount of folic acid will be added to flour used in many everyday foods, including bread and other baked products.

The planned level is 0.25mg of folic acid per 100g of flour.

The idea is to increase folate intake across the population without relying entirely on people remembering to take supplements.

This is particularly important because many pregnancies are unplanned. Someone may become pregnant without having started taking folic acid beforehand.

There are also significant differences in supplement use across the population. Research has found lower rates of folic acid use among some ethnic minority groups and among women living in more deprived areas.

Fortifying commonly consumed foods can therefore provide a population-wide safety net.

Folic acid supplements are still necessary

One of the most important messages surrounding the new policy is that flour fortification does not replace folic acid supplements.

Women who are planning to become pregnant are still advised to take a daily folic acid supplement before conception and during the first 12 weeks of pregnancy.

The reason is simple. The amount of folic acid being added to flour is designed to improve folate levels across the population. It is not intended to provide the higher intake recommended around conception.

Diet alone can also make it difficult to guarantee sufficient folate intake at exactly the right time.

This matters because the neural tube develops and closes very early. Waiting until a pregnancy has been confirmed may mean missing an important window for protection.

How effective could flour fortification be?

Mandatory folic acid fortification has already been introduced in several countries, including the United States, Canada, Chile and Australia.

Evidence from these countries suggests that fortification can significantly reduce neural tube defects.

Canada, for example, introduced mandatory folic acid fortification in 1998. Research has linked the policy to a substantial reduction in spina bifida and other neural tube defects.

The UK government's current estimate is that flour fortification could reduce neural tube defects by around 20 per cent and prevent approximately 200 cases each year.

However, experts argue that the UK approach may not achieve the same level of protection seen in countries with higher fortification levels.

Research from countries with effective mandatory fortification has found reductions in neural tube defects of around 25 to 50 per cent.

This means the UK's policy could be an important step, but it is unlikely to eliminate the problem.

Not all flour will contain added folic acid

Another limitation is that the new policy does not cover every type of flour.

The fortification requirement applies to non-wholemeal wheat flour. Wholemeal flour will be excluded, as will some imported foods and many non-wheat flours.

This could matter because non-wheat flours such as rice, maize and other alternatives are important staples for some communities.

As a result, the benefits of fortification may not be distributed equally across the population.

There is also a risk that people may misunderstand the purpose of the policy. Once consumers hear that folic acid is being added to flour, some may assume that taking supplements is no longer necessary.

Health professionals will therefore need to communicate the difference clearly.

Folic acid and pregnancy: what women need to know

For women who may become pregnant, the key advice remains to take a daily folic acid supplement before pregnancy and through the first 12 weeks.

This recommendation is particularly important because it is often impossible to predict exactly when conception will occur.

Women who are trying to conceive should therefore not wait for a positive pregnancy test before starting folic acid.

It is also important to speak to a healthcare professional if there are questions about the appropriate supplement or dosage, particularly where additional medical advice may be needed.

Why supplement use remains a concern

The introduction of flour fortification comes at a time when folic acid supplement use among women in England is reportedly declining.

According to the information reported by The Independent and The Conversation, fewer than one in five women in England now take folic acid before pregnancy, compared with around one in four five years earlier.

The decline highlights a wider problem. People may not always receive timely information about pre-pregnancy health, particularly when pregnancies are unplanned.

Cost, access to healthcare, competing family responsibilities and uncertainty about when supplements should be taken can all affect behaviour.

Simply providing information may therefore not be enough. Public health measures also need to make healthy choices easier and more accessible.

What does the new UK policy mean for consumers?

For most people, the introduction of folic acid into non-wholemeal wheat flour is not something that requires a major change in their diet.

The policy is intended to increase folate exposure through foods that many people already eat.

For women planning a pregnancy, however, the message is different. Flour fortification should be viewed as an additional layer of protection rather than a replacement for supplements.

The broader goal is to combine food fortification with better education, pre-pregnancy healthcare and continued access to folic acid supplements.

The bottom line

The UK's decision to add folic acid to non-wholemeal wheat flour from December 2026 is a significant public health intervention.

It could help reduce the number of babies born with neural tube defects, particularly because it does not depend on someone knowing they are pregnant or planning a pregnancy.

However, the relatively low level of fortification and the exclusion of wholemeal and many non-wheat flours mean that the policy is unlikely to provide complete protection.

For women who are planning to become pregnant, taking folic acid before conception and during the first 12 weeks of pregnancy remains one of the most important steps for reducing the risk of neural tube defects.

The new flour policy is therefore best understood as a population-wide safety net, not a substitute for individual pregnancy advice.

Disclaimer

This article is intended for general information and educational purposes only. It is not medical advice and should not be used as a substitute for advice from a doctor, midwife, pharmacist or other qualified healthcare professional. Anyone who is pregnant, planning a pregnancy or concerned about folic acid intake should seek appropriate professional advice. Recommendations can vary depending on individual circumstances.