> Obviously all diets have to be LIMO
Diets designed to "cut" (loose weight), yes. Some people want to gain weight, their regimens are also called diets.
Diets designed to "cut" (loose weight), yes. Some people want to gain weight, their regimens are also called diets.
But technicalities don't define words, usage and context do, and, for the vast majority of people, including people here, diet means a change in your habitual pattern of eating designed to induce weight loss. That's how it's universally understood in this context.
Being more technical does not mean being more correct.