Can sexually transmitted infections cause long term health problems?

Sex Effects: Sexual transmitted diseases, if untreated, can cause long term health problems. Syphilis is a good example, which can cause heart, and nervous system disorders including dementia and insanity. Others like HIV can result in aids and death. Hepatitis can lead to liver cancer and death. Some infections can result in chronic fatigue, depression and other cancers like cervical and penile cancer.