Some studies have shown that people living in areas with high levels of magnesium in the water are at lower risk of cardiovascular disease (CVD). Although a cause and effect link seems to be present, it cannot be considered a determinant because of the multiple factors that come into play regarding the etiology of CVD. In many cities, even drinking tap water may not provide the protective effect one is looking for. The fact remains that the most reliable source for minerals is in the food we eat. But if one’s diet is lacking the proper nutrients, taking a mineral supplement is an easy way of getting the minerals one needs in the proper concentrations. So, if your doctor is recommending mineral supplementation, but you just don’t like swallowing pills, minerals can be added to the water in the form of drops or a remineralizing filter can be added to an existing filter or simply used to add minerals to tap water. However, the fact remains, the best source for minerals is in the food we eat.