I think the reason why some people say that the wooden chopping block is unhealthy may be because the structure of the wooden chopping block is more likely to remain bacteria and other substances. For example, aflatoxin is a serious carcinogen, and eating too much is very harmful to people's health. Moreover, aflatoxin is resistant to high temperature and cannot be killed at ordinary water temperature. The probability of aflatoxin in various plastic plates is very small, but in fact there may be other unfavorable substances in plastic plates. We should always clean the wooden chopping board.
In fact, the wooden floor is easy to breed bacteria, it doesn't matter. As long as we can clean it regularly, it is basically harmless to the body. For common bacteria, we can use detergent and brush to clean them. But for aflatoxin, we need to make sure that the impurities on the board are removed, because aflatoxin is resistant to high temperature and a little toxic. You can choose to use two wooden chopping boards.
There is another way to prevent the circuit board from breeding a large number of bacteria. We choose to use two boards, one for cutting raw food and the other for cutting cooked organisms, which can prevent cross-infection of bacteria and prevent bacteria from breeding to some extent.
In a word, the reason why wooden chopping boards at home are unhealthy should be because wooden chopping boards are more likely to breed bacteria. But in fact, as long as we are diligent in cleaning and do not leave impurities on the board, it is basically harmless to the body. We can also choose to use two chopping boards to prevent cross-infection of bacteria.