I read and searched "protein" from the healthy diet, but didn't find any. It covered
- fruit and vegetables, legumes, nuts and whole grains
- sugar
- fats
- salt: 竟然推薦多達5g!!!, 美國醫生一般建議2克(如果是鈉, 就與5g食鹽含鈉相當)
https://www.who.int/news-room/fact-sheets/detail/healthy-diet