Starting this December, UK food manufacturers will be required to add 0.25 mg of folic acid per 100 grams of non-wholemeal flour to supermarket breads, cakes and other baked goods. The government says this mandatory fortification addresses widespread folate deficiencies among women of childbearing age, following years of evidence review by independent scientific bodies.

The move aims to prevent neural tube defects like spina bifida, which affect approximately nine in 10 pregnancies during early development - often before women know they're pregnant. Despite NHS recommendations for pregnant women to take 400 micrograms of folic acid daily, only 31% of women in England take supplements before conception, with particularly low uptake among younger women and those from lower-income backgrounds.

Social media platforms have become battlegrounds over concerns about the MTHFR gene mutation and potential cancer risks from synthetic folic acid. However, nutritionist Rob Hobson emphasizes that these fears lack robust scientific evidence. A 2013 meta-analysis found no significant cancer risk from folic acid supplementation over five years. Countries with existing flour fortification have seen neural tube defect rates drop by up to 55% without clear harm to the wider population. Hobson notes the fortification levels are small, tightly regulated, and far below upper safe intake levels.