Does the name (Histidine) sound vaguely familiar? The reason, L-Histidine's syntheses into the neurotransmitter Histamine. Histamine is released to fight against allergic reactions and causes our well known allergy symptoms - contraction of smooth muscle (the muscles surrounding the airways constrict causing shortness of breath or worse) and contributing to inflammation (increased blood flow transporting leukocytes - the immune systems mobile defense). Those of you (not me) who may suffer badly with allergic responses will commonly use an anti-histamine (inhibiting the actions or release of Histamine) such as Benadryl or Claritin.
Interestingly, amongst its many functions, L-Histidine is required in the manufacture of red and white blood cells.
As mentioned on the Amino Acids article page, L-Histidine is regarded as "semi-essential". The reason, L-Histidine can be made by the adult body, but babies and young children may not be able to manufacture enough for their needs.
Food Sources: Meat, Fish, Dairy, Rice, Rye and Wheat.
Until the next time!
GP
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