Yea it’s on the oatmeal boxes even. Part of what’s interesting about this study though is they claim this two day intensive(300g per day) oatmeal diet showed microbiome changes which persist for months.
300g of oatmeal is about 3.3 cups (US measure).
I would consider a normal bowl of oatmeal for breakfast to be about half a cup, so this is quite a bit more.
Oatmeal is fine, but has nothing on hulled barley.
Oats are for horses. Mankind basically co-evolved with Barley.
Yeah for reference 54 grams is about 200 kcal, so this is 1200 kcal or so of just oats. That leaves 600-800 kcal for other food if you’re targeting 1800-2000 kcal/day which is a reasonable calorie restriction. So this isn’t really a sustainable diet in the long term.