It is noteworthy that all studies except one [10] have been carried out in developed countries where the nutritional status of aging populations seems to be better than that reported by studies carried out in developing countries. In fact, although the variability of the assessment methods do not allow to draw a clear conclusion on the baseline nutritional status of the subjects included in the analysed studies, the prevalence of deficiencies and the number of micronutrients found deficient are evidently lower than those referred in studies from developing countries such as those carried out in Ecuador [11]. The remaining study was carried out in a middle-income country and although data on baseline nutritional status of enrolled subjects was not published, presumably their micronutrient status is somehow similar to that found in developed countries.