This first volume's fifth issue contains an article titled On Critical Positions against Veganism 5: Scientific Biases and Limitations, which is the fifth part of a series of articles motivated by the German Nutrition Society's critical viewpoint towards the capacity of vegan dieting to provide adequate nutrient supply. The article contained in this journal issue provides a comprehensive discussion on the existing scientific biases and limitations that contribute to the general doubt regarding the viability of veganism as a dietary regimen altogether, despite the fact that sufficient scientific evidence has surfaced proving that, of all existing dietary regimens, veganism is in the optimal dietary choice for humans.