Lycopene is a nutrient extracted from tomatoes that generally has antioxidant properties, as well as some immune boosting and anti-tumor effects. There are no reported significant side effects of lycopene, but there are lycopene capsules that are produced that some patients may have diarrhea after eating. In fact, lycopene can be supplemented by diet in nature, and there is no need to deliberately use these supplements or the like. The normal diet is to increase nutrition, eat more fresh vegetables and fruits in season, drink more water and keep the bowels open. If you are a cancer patient, you should not rely on lycopene alone to fight cancer, but you need to have regular checkups and apply effective anti-tumor treatments, including radiotherapy, targeted drug therapy, etc.