>>According to Professor Uri Seligson, insufficient levels of vitamin B-12
>>can lead to nervous system damage. He noted that these symptoms could
>>develop in people strict vegetarians who eat no meat, dairy products or
>>eggs.
>
>Awwww, that's not fair.  As people age, they lose the "intrinsic factor"
>in their stomachs which is necessary for the absorption of B12.  That's why
>they have sublinguals and shots of B12.

Very fair indeed. It is well established knowledge, not just a notion by
Seligson, that long term vegetarians, most notably vegans, are at increased
risk of vitamin B12 deficiency [Herbert V. Staging vitamin B-12 (cobalamin)
status in vegetarians. Am J Clin Nutr 1992; 59: 1213S-22S].

"As people age..." should better be "As western people age...". Although
this particular aspect of human aging has not been studied in non-western
populations, there are many other aging processes that are not seen in such
people. Accordingly, aging in the West is sometimes obviously quite
different than true biological aging.

Best regards

Staffan