Magnesium is very important but of course the big confounding factor is that a higher magnesium depletion score is also a good indicator that you're consuming more processed foods and fewer whole foods.
Is that true, there is more magnesium in the husk?
The food industry is evil.
Edit: Processed food definitely lacks magnesium to be clear, but it's interesting to think about how it might even be more costly than it appears.
Perhaps a high calorie diet (soft drinks, potato chips, etc…) would lead someone to eat less “real food” (meat, vegetables, and grains), and thus overall magnesium would be less.
But still, I don’t know what one would have to focus on eating to avoid magnesium.