evidence: Eating alkaline food cannot prevent or cure COVID-19 [...] An image containing the claim that eating alkaline foods can "defeat" SARS-CoV-2, the virus that causes COVID-19, has been shared at least 800,000 times on Facebook since early April 2020. This claim is incorrect and displays a fundamental misunderstanding of basic science principles. [...] In summary, food at any pH will not alter the very tightly controlled pH of tissues targeted by SARS-CoV-2. Therefore, an alkaline diet will neither prevent nor treat SARS-CoV-2 infection.