 This species, which is sanitary security, is a very important aspect. As we know it, from a consumer's point of view, and from an economic development point of view. But often there are huge gaps in knowledge on the contaminants that affect food that's consumed domestically and exported. For all countries with limited means, we need to tackle the most important problems to be able to get out of the protection of health. We need to make sure food is safe. When it is safe, it keeps diseases away. When we keep our national food supply chain safe, it helps in promoting our trade. We have a lot of food that are contaminated, not chemical contaminants. And this is a huge issue of health. For example, we have cancer problems. We also have children's development problems. To be able to do this study in Benin, in Cameroon, in Mali and in Nigeria, we have studied the food supply of more than 70,000 foods. We have then collected more than 4,000 samples, representative of food habits. A total food study consists in the production of contaminated food, food waste, that we will cross with consumption data for the concerned populations. All of this will give us exposure data, which will bring us to characterize the risk. We have noticed that some foods were strongly contaminated by certain substances. Arachid oil and corn were strongly contaminated by aflatoxins. Some hydrocarbons, aromatic, polycyclic, were found in a very important concentration in some smoked fish. This is also the case for some cooking oils. Nearly half of the collected samples contained pesticides, some of them in trace states and others in very important containers. The results from this study will actually inform the standard development in Codex because they have always been lack of data from Africa. Now the study has provided that necessary data and it can be built on by more other countries and generating more data. This study will help us identify national priorities in the elaboration of norms on the different products, especially the products used in the study. This study will also allow us to implement surveillance plans of these different health risks. We may decide on working on a guide as document for the farmers, for the primary producers, things like guidelines that will help in reducing some of these contaminants in food supply. The study's evidence-based approach provides the scientific basis to meet international standards in Bena, Cameroon, Mali and Nigeria, as well as the region as a whole. Building on the national priorities identified through the Total Diet study, donors can work with governments to target resources to improve food safety for domestic public health and trade. We need to co-work together in the aspect of even translating the issue of food safety to the level of lower education and know that everybody they have a role to play is a collective work. For us to ensure that the national food safety space is secured and safe. So we all need to work together as consumers, as authorities, as research services to double the effort to find solutions and to be able to know the causes of these different risks. Because when we know the cause, it would be easier to find solutions to such or such problems.