When it comes to juice cleanses, there are a variety of potential side effects that should be taken into consideration before beginning such a regimen. Common side effects include dizziness, headaches, fatigue, nausea and dehydration due to the lack of fiber and nutrients found in food. In addition, some people may experience drops in blood sugar levels which can cause irritability or extreme hunger. It is important to remember that detoxing your body too quickly can put stress on your organs so it’s best to take breaks between cleanses or just do them occasionally. If you have any medical conditions or concerns about doing a juice cleanse please consult with your doctor beforehand.