And this is interesting may be related?
>Aspartame is hydrolysed in the body to three chemicals, aspartic acid (40%), phenylalanine (50%) and methanol (10%). Aspartic acid is an amino acid.
>When there is an excess of neurotransmitter, certain neurons are killed by allowing too much calcium into the cells. ...The neural cell damage that is caused by excessive aspartate and glutamate ... they ‘excite’ or stimulate the neural cells to death.
>Methanol is highly toxic; it is gradually released in the small intestine when the methyl group of the aspartame encounters the enzyme chymotrypsin. It has been pointed out that some fruit juices and alcoholic beverages contain small amounts of methanol.