Citation needed. The best source I could find (in 30s) suggests the WHO neither recommends no discourages drinking distilled water.

https://svalbardi.com/blogs/water/distilled-safety

A casual application of math to the concentrations of minerals in tap water would show you that simply eating vegetables would provide much more in the way of minerals (namely calcium and magnesium). If you drink 2L of 60mg/L Ca and 25mg/L Mg, that's only 12% daily value.

"Unsafe to drink DI water" is a myth. If your diet is that marginal that +/-12% matters, take a supplement.