A 12-year study has found that eating Marmite could help reduce the risk of miscarriage and birth defects.
Researchers say the savory spread contains very high levels of vitamin B3, which can treat critical molecular deficiencies in pregnant women. Other foods also high in the vitamin include turkey, tuna and mushrooms.
Professor Simon Fishel, who was a member of the team that pioneered IVF treatment, said, " whilst an intriguing and potentially important scientific study, which has been well conducted, it must be recognised that miscarriage has many causes."
"The largest single cause of miscarriage are chromosome errors - and what we find in mouse modelling needs to be of proven medical concern in humans", he explained.