Banana and pudding
This combination stimulates toxic production that can be even fatal for infants. Also, it is very hard to digest and will make your mind work much slower.
Carrots and orange
Even though this is a very popular combination it often causes heartburn and excess bile reflux. There have even been cases when this combination caused kidney damage and even fatal complications.
Milk and pineapple
Combining milk and pineapples can cause severe headaches, infections, diarrhea, stomach pain and nausea. The reason for this is because pineapples are rich in bromelain, a compound that should never be mixed with milk. Also, this combination is very dangerous for babies.
Lemon and papaya
Lemon and papaya mixture can cause problems with the hemoglobin levels and even anemia. It is just as dangerous for children and adults.
Banana and guava
Consuming this mixture leads to nausea and headaches and also causes acidosis and gasses.
Milk and orange
Some people eat their cereal with some orange juice added in, however if you are one of those you should know how unhealthy this combination is. Orange juice makes it harder for the stomach to process the starch and milk from the cereal which causes digestive problems and other health issues.