The term "oily foods" refers to any type of food that contains a significant amount of fat or oil. These types of food are typically high in calories and can be sources of essential nutrients such as omega-3 fatty acids, vitamin E, and other important health benefits when consumed in moderation. However, overconsumption of oily foods can lead to weight gain, increased cholesterol levels, and other health concerns. Examples of oily foods include nuts, seeds, avocados, olives, salmon, and many types of cooking oils such as olive oil or coconut oil.