Wow, nice. A guy in my country did it eating potatoes. Nothing else. https://www.news.com.au/lifestyle/health/diet/andrew-taylor-eats-nothing-but-potatoes-for-a-year-to-cure-his-food-addiction/news-story/41d8e6612679985fc9bf62e4b970ef15
Why? Was this a weight loss thing?
Rest of the world is doing fine, just Americans struggle with that one. But for some reason not in engineering or science?