Some cheeses

Lactose is present in all dairy products, including cheese. Aged cheeses are usually low in carbs, however liquid cheeses include enough milk sugar to have a modest carb count. Carbs can also be included in processed cheeses in the form of extra whey, flavorings, or other chemicals. Ricotta includes roughly nine grams of total and net carbohydrates per half-cup. Cottage cheese provides roughly five grams of total and net carbohydrates per half-cup. And one slice of American cheese has about a gram of total and net carbs.

For those on the keto diet, goat cheese is an excellent option. According to the United States Department of Agriculture, 1 ounce (oz) of goat cheese includes 103 calories, 8 grams of fat, 0 grams of carbohydrates, and 6 grams of protein (USDA). According to Wagner, goat milk cheese has less lactose and proteins that are different from those found in cow's milk, making it easier to digest.