Why does the Rambam say garlic is harmful? According to studies it is a powerful anti viral/parasitic food

Been having GI problems and while waiting for diagnosis I got curious to read what the Rambam has said about health and came across this, also strange I thought lentils were a Mediterranean diet staple and are very healthy, but more importantly why would garlic be harmful, only to be eaten sparingly? I’ve been eating raw garlic in the mornings.