Love it, or hate it, but Marmite could help prevent millions of miscarriages and birth defects.
A study has found Vitamin B3, which is found in the spread, can compensate for defects in women's ability to make a molecule called NAD which linked to healthy fetal development.
A single serving contains more than a third of the recommended daily allowance of B3, also called niacin.
B3 is also found in various meats and green vegetables.
The ground-breaking results were announced after 12 years of research by scientists at the Victor Chang Cardia Research Institute in Sydney, Australia.
Lead researcher Professor Sally Dunwoodie said: “The ramifications are likely to be huge. This has the potential to significantly reduce the number of miscarriages and birth defects around the world and I do not say those words lightly."
Almost eight million babies are born with a birth defect worldwide each year and in the UK it's estimated that one in six pregnancies end in a miscarriage.
Scientists found that the lack of a molecule called NAD (nicotinamide adenine dinucleotide) can harm the development of the baby and its organs in the womb.
Prof Robert Graham, Victor Chang Cardiac Research Institute executive director, compared the "profound" breakthough to the discovery in the previous century that found folic acid supplementation can prevent spina bifida and other neural tube defects in babies.
"This will change the way pregnant women are cared for around the world," he said.
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