There are some foods that are relatively low in carbs, but which still can inhibit your efforts to lose weight. If you’re struggling to lose weight on low carb they could be holding you back. Dairy products (except for butter) are a great example.
First, dairy products contain a modest amount of carbs (like lactose), which can slow weight loss on low carb. Secondly, they have milk proteins which stimulate the fat-storing hormone insulin, also slowing fat loss.
Butter is the exception, as it contains mainly fat and only tiny amounts of carbs or milk protein.
So if you’re having trouble losing weight, it is a great idea to cut out dairy products (or at least eat less of them).