Health Benefits and Nutritional Value of Egg Whites

Health Benefits of Egg Whites

1. Muscle Mass and Strength

Egg whites can significantly contribute to muscle mass and strength. A study involving women over 55 showed that daily consumption of lactic acid-fermented egg whites (8 grams of protein) over eight weeks, combined with regular exercise, increased muscle weight and strength. However, some studies suggest whole eggs might be more effective due to the additional nutrients in the yolk.

2. Reduction of Visceral Fat

Egg whites may help reduce visceral fat. In a study with 37 adults with a BMI of 25 or higher, participants who consumed lactic acid-fermented egg whites for 12 weeks experienced a significant reduction in visceral fat and improved visceral-to-subcutaneous fat ratios.

3. Potential Reduction in Cholesterol

Egg whites might help lower cholesterol levels. A 2017 study found that men with mildly high cholesterol who consumed 8 grams of egg whites daily saw significant decreases in total and LDL (bad) cholesterol.

4. Reduction of Mental Fatigue in Athletes

Egg whites might help reduce mental fatigue and improve antioxidant capacity. A study involving student-athletes found that those who consumed an egg white protein supplement showed increased antioxidant capacity and reduced mental fatigue compared to a placebo group.

Nutritional Facts of Egg Whites

Egg whites are often recognized as a pure protein source. Here are the nutritional facts for the egg white of one large, grade A egg (34 grams):

• Calories: 17.7
• Protein: 3.64 grams
• Fat: < 0.08 grams
• Carbohydrate: 0.802 grams
• Selenium: 6.09 micrograms (11% of the daily value)
• Riboflavin (vitamin B2): 0.133 milligrams (10% of the daily value)

Egg whites provide all the essential amino acids needed for human health. While low in most vitamins and minerals, they are a good source of selenium and riboflavin.

Egg Whites vs. Whole Eggs

Comparing egg whites to whole eggs reveals that egg whites are valued for their high protein and low-calorie profile. However, whole eggs offer a broader range of nutrients, including iodine, selenium, choline, and vitamin A. Choline supports brain and nervous system health, while vitamin A is vital for growth, immune function, and eye health.

Consuming only egg whites might mean missing out on these nutrients. However, for those looking to increase protein intake without additional calories and fat, egg whites are an excellent option.

Risks of Eating Egg Whites

1. Egg Allergies

An egg allergy occurs when the immune system overreacts to proteins in egg whites or yolks. Symptoms include rash and stomach pains. If you suspect an allergy, consult an allergy specialist.

2. Salmonella Contamination

Eggshells can be contaminated with Salmonella bacteria, causing symptoms like stomach cramps, diarrhea, vomiting, and fever. To reduce the risk, handle eggs properly by inspecting and discarding cracked ones, refrigerating eggs, and cooking them until firm.

3. Biotin Deficiency from Raw Egg Whites

Consuming large amounts of raw egg whites can lead to biotin (vitamin B7) deficiency. Raw eggs contain avidin, which binds to biotin and prevents its absorption. Cooking deactivates avidin.

Tips for Consuming Egg Whites

Egg whites can be easily integrated into meals:

• Scramble with veggies like bell peppers and onions.
• Bake in muffin trays with broccoli and cheese.
• Add cooked egg whites to salads or sandwiches.
• Top avocado toast with sliced hard-boiled egg whites.
• Fill a tortilla with scrambled egg whites, tomatoes, and cheese.
• Make pancakes using egg whites for a low-calorie, high-protein option.

For convenience, egg whites are available in cartons or as dried or powdered forms.