13. Darwin Struggled With Chronic Illness
While some people believe Darwin was always a sickly child, his chronic illness started after one of his many voyages. After the trip he took around the world, Darwin returned home and immediately became sick. He would often vomit, suffer from exhaustion, and eczema, which is a skin condition.
After a few months, Darwin started to suffer from heart problems, including palpitations. He struggled with breathing and had nearly constant headaches. No one is sure why Darwin became ill after a voyage, but many feel he came in contact with Chagas disease, causing his death.
