[namelost]

In the past, "nutrition" meant "getting enough calories", as in the opposite of malnutrition. Grains are plentiful, cheap calories and so they are "nutritious".

Of course if you cut them out of your diet and still eat the same amounts of everything else you will lose weight, that's just thermodynamics!

[SubiculumCode]

Exactly. In the past, calorie intake was probably the most important aspect of food nutrition. We live in good times.

[stanleydrew]

Well technically you could just gain weight more slowly.