While I'm generally a fan of leaving foods as untouched as possible, I have not seen any link between vitamin D3 in the dosage applied to milk and cancer. Conversely, vitamin D deficiency is a population health problem (widespread), so the tradeoff is warranted.

> vitamin D deficiency is a population health problem (widespread)

...despite the study that got very popular on HN lately this is far from a clearly agreed upon theory. There's still only retrospective data and with enough confounding factors to make drawing any inference on the causality of things very very hard. Until we all start wearing blood-analyzing implants for a generation or so, >50% of nutrition related studies will continue either being bullshit or not meaning what we think they mean,

In fairness if we're reading hacker news we're probably D3 deficient.

Of course, I forgot vitamins. Who needs doctors when we have corporate nannies telling us how to eat healthily.

I don't know about cancer, but food additives aren't always a good idea.

Extra calcium is not really absorbed without vitamin D3 (more specifically, calcitriol), but I imagine that if one has a kidney condition one would have to avoid such food additives.

Even the addition of iodine to salt is not without consequences.