Current topics in renal nutrition.

HIS Product Update column is a change of pace. Instead of listing new products with a nutrition analysis, we have provided a brief review of current topics in renal nutrition. With the expansion of research and technology, more tools are available for patient assessment and intervention. However, as healthcare professionals, we are often inundated with information. What follows is a review of some intriguing areas of research, including homocysteine, leptin, intravenous (IV) iron, and alternative medicine.