Professor Emeritus Choi Yoon-jae from Seoul National University expressed concerns about the safety of adding microbial culture raw materials to cell cultured "artificial livestock products" during a presentation at a symposium. He emphasized that natural meat contains vitamins, minerals, and other bioactive substances that are lacking in cultured meat, which only synthesizes muscle and fat through cell culture and adds artificial substances. Attendees at the symposium also discussed the potential risks of not consuming meat, as meat and meat by-products are the main sources of vitamin B12, which is important for preventing dementia.