TLC
The Most Strangest Addictions Ever.
What is the show my strange addiction about?

My Strange Addiction (TV Series 2010–2015) - IMDb

"My Strange Addiction" tells the stories of people who can't kick their unusual addictions. Profiled addicts include a 22-year-old woman who is addicted to chewing on urine-soaked diapers and a 50-year-old man who uses leeches up to 40 times a year.