Do water softeners remove essential minerals from drinking water?

No, you will not miss out on any essential minerals by using a water softener.
Calcium and magnesium are both important to optimal health. However, food is our main source of consuming these minerals – not water. If you would like to add more calcium and magnesium to your diet, drinking hard water is not the solution.
In fact, the calcium and magnesium found in hard water cannot be properly digested. So, reducing their presence in drinking water will not hinder your proper intake of these minerals.