Are they a vegetable? A fruit? One thing tomatoes definitely are is super good for you! Tomatoes are rich in lycopene, a substance that provides a host of feel good benefits to you! Among their many talents, tomatoes can help lower the risk of developing prostate and pancreatic cancers, act as antioxidants to destroy harmful free radicals, and reduce heart disease risk. If you weren't already convinced, a cup of tomatoes only has 35 calories, so it's also a smart snack!