Final answer:
People on certain medications are at a higher risk of foodborne illness due to a weakened immune system which makes it harder for the body to fight off infections.
Step-by-step explanation:
People who take certain medications are at risk for food-borne illness primarily due to a weakened immune system. Certain medications can suppress the immune system or its response to invaders, leaving individuals more susceptible to infections, including those caused by foodborne pathogens. This suppression can occur with medications such as chemotherapy drugs, immunosuppressants for organ transplants, or drugs for treating autoimmune diseases like rheumatoid arthritis.
A weakened immune system means that the body is less able to fight off the bacteria, viruses, or parasites that can cause foodborne illnesses. Consequently, individuals on these medications need to be particularly careful with food hygiene practices, such as ensuring foods are properly cooked, avoiding high-risk foods like raw oysters, and promptly refrigerating leftovers to limit bacterial growth.