Accidentally ingesting maggots does not generally cause any lasting harm. However, if a person has ingested maggots through eating spoiled food, they may be at risk of food poisoning. Symptoms of food poisoning can range from very mild to serious, and they can sometimes last for several days. People with a higher risk of developing food poisoning include young children, older adults, and those with weakened immune systems, such as people living with HIV or those undergoing an organ transplant. If a person develops severe vomiting and diarrhea from food poisoning, it is essential to drink plenty of fluids to prevent dehydration. A person should see a doctor if they experience visible larvae in stools, persistent abdominal pain, symptoms of bacterial poisoning that worsen or do not get better, diarrhea lasting more than 3 days, diarrhea and a fever of more than 102˚F, bloody stools, or signs of dehydration.

It is important to note that most foods that have maggots are not safe to eat, especially if the larvae have been in contact with feces. Maggots may be a viable source of protein, good fats, and trace elements, and scientists are looking into the possibility of using maggots to produce textured protein or a sustainable snack for humans. However, at present, risks still exist and likely outweigh potential benefits.