An excess of vitamin A, for example, can cause birth defects, bone abnormalities, double ??vision, and other health problems.Additional sections of the report will address B ??vitamins; vitamin C and other antioxidants; protein, fat, and other macronutrients; iron, zinc, and other trace elements; electrolytes and water; and food components such as fiber and ??phytoestrogens.To obtain the full text