Just a tiny question. The other day my dad told me his doctor had told him one should not be taking so many supplements. According to him, kidney has a hard time metabolizing them. In my opinion, and this is merely the opinion of someone who relies on common sense, supplements are like food, just with bigger concentrations of nutrients. So if kidney had a hard time with them, it would also have a hard time with food. So in my opinion, taking supplements is inocous if you take them at right doses, and if they are wáter soluble. Am i right?