Vitamin-deficiency-related diseases (such as scurvy and rickets). Several sailors suffer from symptoms of scurvy. Vitamin C that was believed to cure scurvy. As a result, Arctic expeditions continued to be plagued by scurvy and other deficiency diseases. Scurvy (vitamin C deficiency) affected the crew. Worse, scurvy and smallpox had broken out in the city. Native Americans and early European explorers used "Thuja" leaves as a cure for scurvy. Starvation, exposure and scurvy all contributed to the men's deaths. There was no serious outbreak of scurvy. This was also a home remedy against scurvy. Slow healing is an early symptom of scurvy. It is used to prevent and treat scurvy. Many were also suffering from the effects of scurvy. The expedition suffered many difficulties, with d'Entrecasteaux dying on 21 July 1793 of scurvy. Richard, being ill with scurvy, left for England on October 9, 1192.