To be honest, Mado's research results were not of a high caliber.
Sui Xiong was not someone who had researched health and food, but previously on Earth, he had easy access to information regarding this topic. He would get an advertisement or spam mail on this topic in his email inbox every few days. His relatives often consulted him on this topic as well, allowing him to learn more through discussions with them.
Who said that university students had to know everything!? Even though he was knowledgeable, he still had limits in what he knew about this topic. However, at this current moment, he decided to take some time to revise his facts as he wanted to have a clearer idea while listening to this speech.