I don't think there's any evidence that they're inflammatory (great video about it here [1]), but obviously oils are almost 100% fat and therefore have a ton of calories. At the same time, some people feel incredibly satiated from eating fats, to the point where they might eat fewer total calories if they include some...
Generally, avoiding added high calorie fillers (that includes sugar and oils alike) is almost certainly a good idea if you're trying to lose weight though.
Generally, avoiding added high calorie fillers (that includes sugar and oils alike) is almost certainly a good idea if you're trying to lose weight though.
[1] https://www.youtube.com/watch?v=-xTaAHSFHUU