During the American Civil War, diarrhea was the leading cause of death. Soldiers adhered to a code of honor, refraining from shooting at those in the midst of nature's call. Of the nearly 750,000 soldiers who perished, 95,000 succumbed to diarrhea or dysentery. (Read more in 1st comment)
A Russian scientist named Anatoli Brouchkov injected himself with a 3.5 million-year-old bacteria strain that he pulled out of the permafrost at Mammoth Mountain in Northern Siberia in 2009. It is believed that bacteria called Bacillus F could extend life. (Read more in 1st comment)