Fats are an important component of our diet

Fats, or lipids, are the third main class of the macronutrients needed in human nutrition. The lipids are found primarily in meats and dairy foods, at least, these are the most visible sources, but most foods contain some fats. Fats are an important component of our diet, and at least a minimum intake is essential. However, many problems are associated with excessive intake of dietary fat, including obesity, cardiovascular disease, and some forms of cancer. An important component of lipids is the fatty acids. Three essential fatty acids are needed biochemically by our bodies and are available to us only from our diet. Fats, like carbohydrates, are composed of carbon, hydrogen, and oxygen; however, some phospholipids also contain nitrogen and phosphorus. our bodies need a certain amount of fat to function—and we can't make it from scratch. The cycle of making, breaking, storing and mobilizing fats is at the core of how humans and all animals regulate their energy. The main sources of “healthy” fats include nuts and seeds, fish, avocados and most plant-based oils, such as olive oil or canola oil. Healthy fats can help reduce your LDLs or “bad cholesterol. If you dont have enough fats in your body, your brain stops working.
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Fat is a type of nutrient

Alpha-lilnolenic acid is one of the essential fatty acid in human life

Trans fats are found in vegetables shortenings , some margarines, crackers,cookies, etc...

Saturated fats such as butter, solid shortening and lands are not good for human health