evidence: Eating Nutella May Cause Cancer, Science Suggests [...] There are people who are absolutely obsessed with eating Nutella, so it comes as no surprise that a lot of people are pretty devastated at the news that one of the required ingredients to make it creamy and delicious might end up causing cancer. [...] The 2017 study, which was headed up by the European Food Safety Authority, suggested that a key ingredient — refined palm oil — may be linked to an aggressive spread of cancer in laboratory mice.