Several cases of consumption (tuberculosis) occurred in the family of George and Mary Brown, in Exeter, Rhode Island. Friends and neighbors believed that this was due to the influence of the undead. Two family members' bodies were dug up, and, exhibiting the expected level of decomposition, were thought not to be the cause. Daughter Mercy, however, who was held in a freezer-like, above-ground vault, exhibited almost no decomposition. This was taken as confirmation that the undead were influencing the family to be sick. Mercy's heart was burned, mixed with water and given to her brother Edwin, who was sick, to drink, in order to stop the influence of the undead. The young man died two months later.
Uhgggggg...drinking a tea made from my own dead relative's ashes would be enough to make me vomit and die anyway.
Read more about Mercy Brown here: