Be careful kids, and learn from the mistakes of Tycho Brahe, the greatest astronomer of the sixteenth century:
Tycho suddenly contracted a bladder ailment after attending a banquet in Prague, and died eleven days later. According to Kepler's first hand account, Tycho had refused to leave the banquet to relieve himself because it would have been a breach of etiquette. After he had returned home he was no longer able to urinate, except, eventually, in very small quantities and with excruciating pain. A contemporary physician attributed his death to a kidney stone, but no kidney stones were found during an autopsy performed after his body was exhumed in 1901, and the modern medical assessment is that it is more likely to have resulted from uremia [kidney failure].