Made from peanut plant seeds, peanut oil — also known as groundnut oil — is commonly used in baking, sautéing, frying, and other forms of cooking. While peanut oil offers a slightly nutty flavor, it's generally a good, neutral option to use for most recipes.
Most people already consume a diet high in omega-6 fats, which are found in vegetable oils, fast food, and many packaged products. Consuming peanut oil in moderation is generally considered safe. However, if you consume too much omega-6 fatty acid, it harms in many ways, including increasing the odds of heart disease.