## 5 Limitations  
Although the SANI approach may represent a valid tool to respond to the current challenges regarding the improvement of the food system, focusing attention on human health in terms of nutrition and environmental sustainability, it has some flaws and shortcomings.  
First, the possible difficulty of reorganizing an active network between various partners (producers, academic research groups, consulting and training centers, consumers, and retail specialty stores) in a scenario other than that of the SANI strategy. Second, SANI knowledge should reach a wider population that, outside the Mediterranean area, could be difficult to apply as a result of different eating habits and lifestyles [57]. These actions, as mentioned above, should comprise both short- and long-term targets. Among these, assessing the long-term potential benefits on human health and the environment could require more skills and people to be involved.  
Additionally, further research will be necessary to improve the informative method on health claims (such as labeling improvement) in order to help consumers with choosing products for specific and customized dietary needs. Indeed, a weakness of SANI labels is that they indicate exclusively specific nutrients, which are contained in high quantities in the products, associated with a technological tool (QR code) that allows to get real-time information about the nutrient properties. A label that presents a complete profiling of all macronutrients and micronutrients, together with an indication of the unhealthy ones for human health, such as those already reported in the NutriScore and SAIN-LIM system [58; 59], could be more useful for consumers.  
Another limitation may be the ability of older people to use technological tools (such as smartphones, tablets, and computers), as these skills were required especially during the communication, dissemination, and marketing phases of the SANI project. As for our small-scale project, the elderly population was only 23%, and they had assistance from the staff of the specialty retail store in order to get information about the products of interest during purchases. However, this aspect is expected to be resolved in the near future, with directed efforts already underway [60].  
In conclusion, in spite of these limitations, the SANI project offers a great methodological opportunity to improve the food environment and to promote conscious healthy dietary consumption through a novel nutritional educational approach.  
Conceptualization, N.D.P. and A.P.; methodology, N.D. and A.C.; formal analysis, P.D.B.; investigation, L.T. and M.Z.; resources, N.D. and P.D.B.; data curation, M.P.A.B.; writing (original draft preparation), N.D.P., G.F., and C.P.; supervision, N.D.P.; project administration, A.P.; funding acquisition, A.P. and A.C. All authors have read and agreed to the published version of the manuscript.  
This research was funded by SAper NutrIrre (SANI; Por Fesr Abruzzo 2014-2020 Asse I Determinazione), grant number 39 DPG013/12222017.  
The authors thank the SANI network partners: [PERSON], [PERSON], [PERSON], and [PERSON].  
The authors declare no conflict of interest. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript; or in the decision to publish the results.