Folic Acid Will Be Added to UK Flour: What the New 2026 Rules Mean for Pregnancy

Folic acid will be added to non-wholemeal wheat flour in the UK from December 2026. Learn why flour is being fortified and why supplements remain important before pregnancy.

From December 2026, folic acid will be added to non-wholemeal wheat flour across the UK. The policy is designed to increase folate intake across the population and help reduce the risk of neural tube defects, including spina bifida and anencephaly.

The change is an important public health measure, but it does not mean that women who could become pregnant should stop taking folic acid supplements. Health experts continue to recommend supplementation before pregnancy and during the early weeks of pregnancy because the most important stage of neural tube development happens very early.

What is folic acid?

Folic acid is the synthetic form of folate, also known as vitamin B9. It is essential for normal cell growth and division and plays a particularly important role during the earliest stages of pregnancy.

Soon after conception, an embryo's neural tube develops into the brain and spinal cord. If the neural tube does not close correctly, serious conditions known as neural tube defects can occur.

Spina bifida is one example. It develops when the spine and spinal cord do not form normally. Anencephaly is another 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.

Why is the UK adding folic acid to flour?

One of the biggest challenges with folic acid is that it needs to be available before pregnancy and during its earliest stages.

The neural tube closes at around four weeks after conception. At that point, many women may not yet know that they are pregnant.

Taking folic acid before conception therefore provides an important opportunity to increase folate levels at the right time. However, not every pregnancy is planned, and supplement use is not equally high across the population.

Mandatory flour fortification is intended to provide an additional source of folic acid without requiring people to plan ahead or remember to take a supplement.

From December 2026, the UK policy will add 0.25mg of folic acid per 100g of non-wholemeal wheat flour.

Are folic acid supplements still necessary?

Yes. Flour fortification should be viewed as an additional layer of protection rather than a replacement for supplements.

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

This distinction is particularly important because the amount added to flour is relatively low. The UK strategy is expected to reduce the number of neural tube defects, but experts have warned that it will not prevent all cases.

The government estimates that fortification could prevent around 200 cases of neural tube defects each year, representing a reduction of approximately 20 per cent.

That means supplementation and appropriate pre-pregnancy advice remain important.

Folic acid use is declining

The introduction of mandatory fortification comes at a time when folic acid supplement use before pregnancy has been falling.

According to the information reported in the source article, fewer than one in five women in England now take folic acid before pregnancy. This compares with around one in four five years earlier.

There are also significant differences between groups.

Supplement use has been reported to be lower among Black and Asian women and among women living in more deprived areas. Uptake has also declined sharply in some regions, including the north-east of England, while levels remain below the national average in the west Midlands.

These differences suggest that the issue is not simply about whether individuals remember to take a supplement.

Access to healthcare, pregnancy planning, affordability, awareness and the availability of reliable information can all influence whether someone takes folic acid at the recommended time.

Why timing matters so much

Folic acid is particularly important before pregnancy because neural tube development happens extremely early.

Someone who waits until they receive a positive pregnancy test may already have passed an important stage of development.

This is one reason why population-wide fortification can be useful. It does not depend on someone knowing that they are pregnant or actively planning a pregnancy.

Fortification can also help people who do not take supplements regularly.

However, dietary sources alone are not considered a reliable substitute for the recommended folic acid supplement around conception.

What can other countries tell us?

The UK is not the first country to introduce mandatory folic acid fortification.

Countries including the United States, Canada, Chile and Australia have implemented forms of mandatory fortification, with evidence suggesting that these policies can substantially reduce neural tube defects.

Canada introduced mandatory fortification in 1998. According to the research discussed in the source material, rates of spina bifida subsequently fell by around 53 per cent.

The international evidence supports the idea that fortifying commonly consumed foods can have a meaningful population-level effect.

However, the UK approach differs in both the amount of folic acid added and the types of flour covered.

Who will benefit from the UK policy?

The policy is intended to raise folate levels across the population, including among women who may become pregnant unexpectedly or who do not take supplements.

But not everyone will benefit equally.

The policy covers non-wholemeal wheat flour, meaning wholemeal flour is excluded. Some imported foods and products made with other types of flour will also fall outside the scheme.

This may be significant because wheat flour is not used in the same way by every household or community.

Researchers have therefore argued that a wider and more effective approach could be needed if the UK wants to achieve the greatest possible reduction in neural tube defects.

What should women do?

The arrival of fortified flour should not create confusion about existing pregnancy advice.

Women who could become pregnant should continue to follow current medical guidance on folic acid. Those planning a pregnancy should take a daily folic acid supplement before conception and continue taking it during the first 12 weeks of pregnancy.

Anyone who is unsure about the appropriate dose, particularly those with specific medical circumstances or previous pregnancy complications, should speak with a doctor, pharmacist or other qualified healthcare professional.

It is also important not to assume that eating bread or other products made with fortified flour provides the same protection as taking a recommended supplement.

The bigger picture

Adding folic acid to flour represents a significant change in UK public health policy. Its main advantage is that it can reach people regardless of whether they are planning a pregnancy or taking supplements.

But fortification should not be considered a complete solution.

The decline in supplement use shows why clear information about pre-pregnancy health remains important. Improving access to healthcare, reducing inequalities and ensuring women understand why folic acid needs to be taken before pregnancy could all contribute to better outcomes.

The most effective approach is likely to combine food fortification with accessible healthcare, education and continued use of supplements where recommended.

For women planning a pregnancy, the key message is straightforward: fortified flour provides an additional source of folic acid, but it does not remove the need for recommended supplementation before conception and during early pregnancy.

Source: The Independent on 20 August 2026, The Conversation. The original article was written by Danielle Schoenaker and Keith Godfrey of the University of Southampton.

Disclaimer: This article is for general informational purposes only and is not medical advice. Pregnancy and supplement requirements can vary between individuals. Consult a GP, midwife, pharmacist or other qualified healthcare professional for advice specific to your circumstances.