Consuming oils in large quantities or from not-so-nutritious sources can have a big negative impact in our health. Some of the common "healthy oils" have been wrongfully marketed to create the illusion of "being healthy". But we need to take into account not only the saturated fat they bring into our body, but the lack of nutrients found in them.
We have to be educated to consume only the nourishing foods our body needs to have great health and body weight.
The main concerns about a high oil (or even just a low but non nutritious oil) consumption is the risk of obesity, heart disease and cancer. Check out the links below to find educational sources to better understand oils and their impact in our health.