Yes these symptoms are quite common among people who suffer from anxiety attacks. What is happening is that anxiety attacks are caused by excess adrenaline production, due to some internal biochemical or hormonal abnormality.
Adrenaline directs energy away from non-essential organs in the body such as the digestive system to the muscular, heart and brain to face the 'danger'. Thus food cannot be digested properly and we feel sick! But in anxiety attacks there are no internal dangers.
Anxiety attacks are caused by hypoglycemia or insulin resistance that stops the absorption and proper metabolism of the sugars we eat into biological energy. Hence the brain can be starved of energy which causes it to release adrenaline (via adrenal glands). This hormone functions to raise blood sugar levels so as to feed the brain again.
Please read:
“beating anxiety and panic attacks” at our web site at:
Hypoglycemia.Asn.Au
also google search: “anxiety hypoglycemia”
jurriaan plesman, ba (psych) post grad dip clin nutr