Food and Nutrition are both the keys which provide a Healthy Diet. At the end of the day, all the Human body needs are Proteins, Fats, Vitamins, Minerals and Carbohydrates. Maintaining their levels in the body is an important consideration for a Healthy Life. Their imbalance may cause various Diseases in the body. Ultra-Processed foods are industrially manufactured, generally they are ready-to-eat products, these products are high in added sugars, salt and/or Saturated Fatty Acids and they may contain cosmetic additives such as flavorings, colouring agents and emulsifiers. They may also contain some preservatives for their longer stability after packaging. Nowadays the Consumption of ultra-processed foods (UPF) is rapidly increasing around the world specially in middle-income countries. More consumption of these Foods causes various health problems such as Overweight and Obesity, which gives rise to many serious diseases including Cancer. As many Studies are Conducted to find out whether the consumption of these foods is linked with increased risk of cancer or not, and showed that increase in UPF consumption was associated with higher risk of mortality. Moreover, the theoretical substitution of Ultra-Processed Foods with unprocessed or minimum processed foods leads to a decrease in mortality. In this review, we had studied and highlighted the harmful effects of Ultra Processed foods and their link with serious diseases such as Cancer, also we had covered causes of Cancer linked with Foods and drinks.