If most of the fat content comes from healthy unsaturated fat, you're probably good to go. If the fat is mainly saturated and/or the product has any trans fat, put it back on the shelf. Trans fat has been shown to increase levels of "bad" LDL cholesterol while decreasing levels of "good" HDL cholesterol -- a double health whammy.
Don't be fooled by a label that lists 0 grams (g) trans fat. Because of a labeling loophole, a product can contain up to 0.5g trans fat per serving and say it has none. Check the ingredient list: If it includes partially hydrogenated oil, then there is trans fat in there. Shortening is another source of trans fat.
Health.com