Does Fat Make Us Fat?
Yes, relatively speaking. Dietary fat does make us fatter than either protein or carbs.
For example, because fat is close to the form it needs to be in for storage, metabolizing it requires just 3 calories for every 100 calories consumed.
This leaves 97 calories available for storage.
By comparison, converting carbs to storable fat is more complex and uses up 23 out of every 100 calories consumed.
Which leaves only 77 calories available for storage as fat.