Researchers have identified 36 common secrets, and they range from infidelity to job dissatisfaction, from romantic desires to criminal behavior, and from having had a traumatic experience to pursuing an unusual hobby.
At any given time, the average person keeps about 12 of them. And while we would like to take some of the big ones to the grave, that's not always possible.
Created by Reddit user SailoLee92, there's an online thread where people have been answering the question "What disturbing thing did you learn about someone only after their death?" Here are some of the most upvoted stories.