Eudaimonic well-being "reduces the bite" of risk factors normally associated with disease like low education level, using biological measures, according to their recently published findings on a subset of study participants.

WSJ: University of Wisconsin Study Finds Eudaimonic Happiness Lessens the 'Bite' of Risk Factors for Disease

The cause of Chagas disease is the parasite Trypanosoma cruzi, which is transmitted to humans from a bite from an insect known as the triatomine bug.

CNN: Chagas disease

The disease is caused by bacteria related to syphilis that enter the body through a tick bite.

FORBES: Lyme Inc.