When I was young, I thought going to Mars or the moon would be awesome. But I wonder if even living or Mars is possible, even if water is found.
I remember reading a while ago if water you drink distilled water and only distilled water long term, it will do you harm. I wonder if the same could apply to water on other planets ? IIRC, it has to do with minerals or something in water here.
It depends on wholesale diet. As long as you get those minerals from some source such as food itself you are fine. Or you can simply add them in as needed.
This might also be one problem as whole. Whatever food you eat must cover all needs or be supplemented. So there is need to ensure that either sufficiently varied items to fill needs are shipped in or whatever is produced locally covers absolutely all needs.