Certainly does look interesting. I wonder how many of the numerous chronically ill among the Victorians were suffering from low-level arsenic poisoning - especially women, who spent more time at home among the wallpaper etc - all those who were 'feeble', 'never well', 'felt faint all the time' etc and ended up dying young of some unspecified cause.
Re N - despite what Marc's source says, I really don't know why they don't just open him up and end the whole thing once and for all. You'd think it would be of enough national and international interest to warrant finding out the national hero's real cause of death. Then we could get over it... although of course, a whole industry would collapse.