Fast foods have today become a staple of modern life. People are busy and don’t have enough time to make and eat healthy food, and that’s where fast foods comes into play. Fast food not only causes general health problems such as diabetes and obesity, but also gum disease and tooth decay. One of its causes is their salt and sugar. After having these foods, sticky debris containing sugar and salt sticks to the dental surface and the produced acid causes tooth decay. Another point is that carbonated beverages are often consumed along with fast foods, such as cheeseburgers, which have high sugar and can damage the enamel. At the same time, diabetes is a preparatory stage for periodontal disease, and diabetics must maintain their blood glucose levels at the optimum level to avoid its adverse effects on their general and oral health. Now, if we add poor oral hygiene to all of the above, guess what will befall your teeth and their holding tissues. Therefore, it is best to talk to your patients and inform them about the side-effects of fast food overconsumption.