The main problem of nutritional research is that it’s hard to get people to eat controlled diets. I don’t think the key problem is about sourcing ingredients.
I won’t think that’s true. Or rather, it’s only true in the specific case of studies that involve calorie restriction. In practice that’s a large (excessive) fraction of studies, but testing variations of the contamination hypothesis does not require it.
The main problem of nutritional research is that it’s hard to get people to eat controlled diets. I don’t think the key problem is about sourcing ingredients.
I won’t think that’s true. Or rather, it’s only true in the specific case of studies that involve calorie restriction. In practice that’s a large (excessive) fraction of studies, but testing variations of the contamination hypothesis does not require it.
If it would be only true in the case of calorie restriction, why don’t we have better studies about the effects of salt?
People like to eat together with other people. They go together to restaurants to eat shared meals. They have family dinners.