TIL Sharks can suffer from cancer. The misconception that sharks do not get cancer was spread by the 1992 book 'Sharks Don't Get Cancer' by I. William Lane and used to sell extracts of shark cartilage as cancer prevention treatments. User sir-fur, in the Today I Learned (TIL) subreddit, 09 Jul 2020
TIL in the 90s, the author I. William Lane created the myth that sharks cannot get cancer in order to sell shark cartilage to cancer patients. User theybothsink, in the Today I Learned (TIL) subreddit, 25 Jan 2014