One debate fueled by the coronavirus is about whether to have steamed buns and congee (porridge) for breakfast, or milk and toast. It’s a serious question in China, where the government is pushing people to drink milk to get more protein, a vital ingredient in building the body’s immune system.

Parents "should prepare enough milk and eggs every morning for your children ... no congee should be allowed as breakfast,” said Zhang Wenhong, a doctor at the infectious diseases department at Shanghai’s Huashan Hospital and one of China’s most outspoken critics of the nation’s diet since the start of the COVID-19 outbreak.

Zhang’s view has some serious backing. At this year’s National People’s Congress, China’s annual meeting of parliament, a lawmaker suggested the government should make it a national strategy to encourage every person to drink at least 300 grams of milk a day.