Researchers have found that there is no evidence that coffee plays any role in the risk of cancer. Antioxidants help support the immune system and help fight the spread of cancer. Consuming coffee up until 20 minutes after brewing will deliver 300 phytochemicals that are antioxidants and will stay in the human system up to one month. The ingestion of coffee also provides the equivalent amount of antioxidants as three glasses of orange juice. Overall, coffee is not bad for the teeth.
Some dentists agree that although coffee stains teeth, it also helps prevent cavities.
Properties in coffee help in fighting plaque, which may lead to cavities. In some investigations, coffee has been shown to increase awareness, alertness and mental activity. There is also evidence that coffee decreases depression. Coffee also takes effect faster than most products on mental performance, working in little as 10 minutes. In years past, coffee was used as the prescribed cure for Attention Deficiency Disorders in children.