Intended for healthcare professionals

Rapid response to:


Folic acid fortification and congenital heart disease

BMJ 2009; 338 doi: (Published 13 May 2009) Cite this as: BMJ 2009;338:b1144

Rapid Response:

Beware of nutritional yeast

Although nutritional yeast is a good source of vitamins and minerals, including
folic acid, it is nonetheless very high in glutamate, which is a major excitatory
neurotransmitter in the central nervous system. As a result of its high
concentration, yeast is moderately addictive and can cause or aggravate asthma
and headaches. Despite its nutritional and flavor-enhancing properties, it is
to avoid glutamate in all its forms, including the ubiquitous monosodium

Competing interests:
None declared

Competing interests: No competing interests

15 May 2009
Hugh Mann
Eagle Rock, MO 65641 USA