Considering that regular supermarket foodstuffs contain hundreds of thousands of substances, most having no effect, but some harmful and others helpful, and people eat different diets fairly randomly, we are already doing this experiment, we just aren't collecting the results.
Well no, you're proposing a cocktail of known-active compounds, presumably injected directly into a person's bloodstream.
With regard to the food supply, actually if there's anything we are collecting, it's the results (health outcomes). The bigger problem is the same problem as your proposed experiment: we aren't controlling the inputs, and so the results are entirely noise.
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Considering that regular supermarket foodstuffs contain hundreds of thousands of substances, most having no effect, but some harmful and others helpful, and people eat different diets fairly randomly, we are already doing this experiment, we just aren't collecting the results.
Well no, you're proposing a cocktail of known-active compounds, presumably injected directly into a person's bloodstream.
With regard to the food supply, actually if there's anything we are collecting, it's the results (health outcomes). The bigger problem is the same problem as your proposed experiment: we aren't controlling the inputs, and so the results are entirely noise.