Complex sentence: Dietitians may recommend that minerals are best supplied by ingesting specific foods rich with the element (s) inerals derives from an interest in supporting biochemical reactions with the required elemental components.
Split into simpler sentences: Dietitians may recommend that minerals are best supplied by ingesting specific foods rich with the element (s) of interest. The dietary focus on minerals derives from an interest in supporting biochemical reactions with the required elemental components.