9. Feedlot fed animals
A feedlot is an animal feeding operation in commercial animal farming. Essentially, the process contains the animals in large pens instead of being able to roam free. The reason for this is to increase the size of the animals before slaughtering. Most of the feeds they are given are high in omega-6 and low in omega-3 fatty acids. As a result, the confined living conditions promote the animals to end up with high saturated fat levels, and they are injected with hormones and antibiotics to help them grow faster and not become sick. A current study by Simopoulos shows the direct link of an Omega-6 and Omega-3 imbalance to obesity in humans.