Tis van der Mer

Tis van der Mer is an advocate and founder of the Stichting Donorkind foundation, which assists children in finding their biological fathers. He has been vocal about the recent revelations concerning sperm donors in the Netherlands, describing the situation as a medical catastrophe. Van der Mer emphasizes the long-term psychological and practical challenges that children may face due to the high number of half-siblings resulting from the violations of donor regulations.