I have read that one of the common symptoms of POTS is reactive hypoglycemia, lowering of
glucose. Researchers have come to understand that this lowering of
glucose levels is not the only cause, because patients’ bodies are also producing excessive amounts of adrenaline and other stress hormones.This site, The Serotonin Connection, better explains the connection between overproduction of adrenalin and stress and hypoglycemia.
http://tinyurl.