As an exploratory and theoretical reflection for future articles discussing the perceived green/health qualities of tunisian food as a tourist promotion argument, the article is based on the assumption that the COVID-19 pandemic would have more impact in countries whose population has an immune system weakened by food overtreated with pesticides, and that the Mediterranean food culture, which offers foods with little or no pesticide treatment, is the best diet to develop the necessary immunity to resist COVID-19 and, by extension, resist other pandemics. To demonstrate this, the thematic map technique was used to cross-reference several masses of official statistical data. The results suggest four main categories of countries in relation to the link between deaths from COVID-19 and the use of pesticides in agriculture. This study demonstrates, therefore, the weakness, if not the inaccuracy, of certain hypotheses which are circulating or have circulated in recent months and that attempt to explain each country's response to the COVID-19 pandemic. Thus, assumptions such as the role of quarantine in containing the pandemic, the role of the BCG vaccine and the role of heat will prove unreliable. On the other hand, the hypothesis the paper will defend is that of the role of a healthy Mediterranean and flexitarian diet in strengthening the human immune system, which in turn counteracts the SARS-CoV-2 virus. This sanitary suitability would therefore be an argument for promoting and disseminating this culinary heritage throughout the world and thus contribute to its development as a tourist attraction.