Nutritional yeast flakes

What are the health benefits of Nutritional yeast flakes?

There is conflicting data about these flakes. Due to hugely conflicting data for this from the packaging and the Tesco and Holland and Barrett websites, we have taken the macronutrient data for this ingredient from the packet, (and adjusted to a net carbohydrate figure), and half the micronutrient data from the USDA data for dried active yeast.