In Egypt, as many as 78% of donors experienced negative health outcomes, and 96% of donors stated that they regretted donating.[44] These findings are relatively consistent across all countries: those who sell their organs on the market tend to have poorer overall health. Substandard conditions during transplant surgeries can also lead to transmission of diseases like hepatitis B, hepatitis C, and HIV. Donors' poor health is further exacerbated by depression and other mental illnesses brought on by the stress of donating and insufficient care after surgery.[42][63]