Does Egg White Contain Dairy? The Definitive Answer

November 9, 2025 •

2 min read

Despite common placement in the grocery store's dairy aisle, eggs are not a dairy product and are derived from poultry, not mammals. This means the albumen, or egg white, does not contain any dairy-based ingredients, including lactose or milk proteins.

Quick Summary

This article clarifies that egg whites are completely dairy-free, explaining the fundamental biological difference between eggs from birds and milk from mammals. It addresses why the two are often confused, and details the distinction between an egg allergy and a dairy allergy, providing crucial information for those with dietary restrictions or sensitivities.

Key Points

Egg whites are dairy-free: Eggs come from birds, not mammals, meaning they contain no lactose or milk proteins.
Not a milk product: Dairy products are derived exclusively from mammalian milk, such as that from cows, goats, or sheep.
Lactose intolerance is not an issue: As egg whites contain no lactose, they are safe for individuals with this digestive condition.
Egg vs. dairy allergy: An egg allergy is a separate and distinct condition from a milk or dairy allergy, caused by different proteins.
High in protein, low in fat: Egg whites offer a lean, high-quality protein source, containing virtually no fat or cholesterol.
Confusion explained: The common misconception arises from grocery store placement and the fact that both are animal products, often avoided by vegans.

The Fundamental Difference: Birds vs. Mammals

Dairy products originate from the milk of mammals like cows, containing proteins (casein, whey) and lactose. Eggs, however, are laid by birds and do not contain these components. Egg white, or albumen, is primarily water and protein, making it an animal product, but not dairy.

Why the Confusion? A Look at Common Misconceptions

Confusion often arises due to eggs being sold in the dairy aisle and certain diets, like veganism, excluding both eggs and dairy. Both are also animal-based protein sources, which can lead to them being grouped together.

Distinguishing a Milk Allergy from an Egg Allergy

Dairy allergies are reactions to milk proteins, while egg allergies are reactions to egg proteins, like ovalbumin. Symptoms for both vary. It's possible to have both, but they are separate conditions. Consult an allergist for diagnosis.

Dairy Allergy (Milk Allergy)

An immune system reaction to milk proteins (casein and whey), potentially causing severe symptoms. Individuals with this can typically consume egg whites.

Egg Allergy

An immune reaction to egg proteins, more concentrated in the white. Allergies can be outgrown, but may persist.

Egg Whites and Lactose Intolerance

Lactose intolerance is a digestive issue caused by insufficient lactase to break down lactose. Since egg whites are lactose-free, they are safe for those with this condition.

The Nutritional Profile of Egg White

Egg whites are low in calories and contain mainly protein with negligible fat and carbohydrates.

Here is a comparison of key nutrients in a large egg white versus a whole large egg:


Nutrient	Egg White (Large)	Whole Egg (Large)
Calories	~17	~72
Protein	~3.6 g	~6 g
Total Fat	~0 g	~5 g
Cholesterol	0 mg	~186 mg
Carbohydrates	~0.2 g	~0.4 g
Calcium	~2.3 mg	~24 mg
Potassium	~54 mg	~69 mg

Egg whites are a good option for managing fat and cholesterol intake.

Conclusion: A Clear Distinction

Egg whites do not contain dairy. They are from birds, distinct from mammal-derived dairy. This is crucial for navigating dietary needs due to allergies, intolerances, or choices like veganism. Making informed decisions is key for safe eating.

For more on food allergies and intolerances, visit organizations like the Food Allergy Research & Education (FARE).

Frequently Asked Questions

Yes, egg whites are completely dairy-free and safe to eat on a dairy-free diet, unless you have a separate egg allergy.

No, an egg allergy is not the same as a dairy allergy. They are two separate conditions caused by different proteins; egg allergies are a reaction to egg proteins, while dairy allergies are a reaction to milk proteins.

Eggs and dairy products are often sold in the same refrigerated aisle for convenience, as both require cold storage. This common retail practice can lead to consumer confusion about their food categories.

No, egg whites do not contain lactose. Lactose is a milk sugar found exclusively in dairy products, which are produced by mammals.

Yes, egg whites are suitable for people with lactose intolerance, as they are lactose-free. Symptoms associated with lactose intolerance will not be triggered by consuming egg whites.

The protein in egg white comes from the clear liquid, or albumen, produced within the hen's oviduct. It consists primarily of albumin and other proteins, not dairy-derived proteins.

No, if you are following a vegan diet, you cannot eat egg whites. A vegan diet excludes all animal products, including eggs.