At a time when roughly 60% of the crews on long voyages took
sick and died, Cook applied scientific methods to every aspect of his
explorations. He determined that large amounts of fruits and vegetables or
sauerkraut juice in the sailor's diet reduced scurvy
(a disease caused by a lack of vitamin C making your
gums to get spongy, your teeth to fall out and bleeding into your skin.).
He also required his men to bathe each day and air their bedding twice a
week.