Mixing fruit and vegetable juice

Well, some people do say that mixing fruit and vegetable juice together is a bad practice. The only fruit that can be mixed with vegetables is apples. This is because mixing and juicing fruit and vegetables together can cause digestive disorders. The digestive enzymes required for digesting vegetables are different from that required for digesting fruits. So mixing the two may result in an upset stomach. Apples are safe and can be mixed with vegetable juices as they are considered to be neutral. However, there are plenty of commercial brands of fruit and vegetable mixed juices and they do not seem to cause any harm to people who have them.

Sometimes it become bad combination & harm to health. When you combine the both it leads to digestive problems like nausea , vomiting or bloating.