Processed food may affect gut and immune system, according to foreign source

According to a report on Vietnam.vn, eating a lot of processed foods may influence the gut and the immune system. The source indicates that there may be a connection, but does not mention what specific consequences there are or how strong that connection is.
Processed foods often contain additives such as preservatives, sugars and fats that do not naturally occur in unprocessed products. According to the source, these substances could play a role in changes to the gut microbiome or the immune response, but it is not explained how this exactly works.
No information has been given about which studies or findings this report is based on. Whether it concerns new insights or a summary of existing knowledge is not clear. For now, the subject remains a point of attention within research into nutrition and health.
This report is a summary based on the mentioned source and is not medical advice. Consult a doctor or pharmacist in case of complaints.