Eggs are among the most affordable sources of high-quality protein and provide several essential vitamins, minerals and other nutrients. They are commonly included in breakfast and everyday meals, but questions remain about how regular egg consumption affects different parts of the body, particularly the heart, liver and digestive system.
Gastroenterologist Dr Saurabh Sethi recently addressed these questions in an Instagram post, explaining the nutritional benefits of eggs and highlighting a few precautions people should keep in mind.
According to the doctor, eggs support several important bodily functions, including brain activity, eye health, muscle development and bone health. Their protein content also helps people feel full for longer, which may support weight management.
However, he pointed out that eggs should be consumed in reasonable quantities, particularly by people concerned about their heart health. He also clarified that while eggs provide several nutrients, they are not a source of dietary fibre and have no established direct benefit for improving gut bacteria.
How eggs support brain, muscle and bone health
Eggs provide high-quality protein containing essential amino acids required for muscle growth and repair. This makes them a useful addition to meals for people looking to maintain muscle strength and support recovery after physical activity.
Their protein content also contributes to satiety, or the feeling of fullness after eating. Including protein-rich foods such as eggs in a balanced breakfast may help reduce hunger between meals and support people managing their calorie intake.
Eggs also contain choline, an essential nutrient that plays an important role in brain function. Choline is required for the production of acetylcholine, a neurotransmitter involved in memory, mood and muscle control.
Dr Sethi has previously highlighted the role of choline in supporting memory, concentration and cognitive functions.
Eggs also provide nutrients such as vitamin D and phosphorus, which contribute to bone health. Vitamin D helps the body absorb calcium, while phosphorus is an important component of bones and teeth.
These nutrients make eggs a convenient way to add nutritional value to everyday meals, although they should be consumed as part of a varied diet rather than treated as a complete source of nutrition.
Are eggs good for heart health?
Eggs contain several nutrients that support normal bodily functions, but their relationship with cardiovascular health has attracted considerable discussion because of the cholesterol present in egg yolks.
Dr Sethi said eggs can be included in the diets of people with diabetes, but recommended consuming them in reasonable quantities with heart health in mind.
Egg yolks contain dietary cholesterol, while eggs also provide protein and other nutrients. The effect of eating eggs regularly can vary depending on an individual’s overall diet, health condition and metabolic risk factors.
The doctor also pointed to the role of eggs in supporting levels of high-density lipoprotein (HDL), commonly known as good cholesterol.
HDL helps transport cholesterol from the bloodstream to the liver, where it can be processed and removed. However, the relationship between egg consumption and cholesterol levels is not the same for everyone.
People with diabetes, high cholesterol or existing cardiovascular disease may need to consider their overall dietary pattern and individual risk factors before deciding how many eggs to eat.
The amount of saturated fat in the rest of the diet also matters. Eating eggs alongside vegetables and whole grains is different from regularly consuming them with processed meat, butter-heavy foods or other sources of excess saturated fat.
Do eggs improve gut health?
Eggs provide protein and several micronutrients, but they do not contain dietary fibre.
Fibre is important for digestive health because it supports regular bowel movements and provides nourishment for beneficial gut bacteria. Foods such as vegetables, fruits, legumes, nuts and whole grains are important sources.
Dr Sethi said there is no clear evidence that eating eggs directly improves gut bacteria.
However, the absence of fibre does not mean eggs are necessarily harmful to digestion. Most people tolerate properly cooked eggs without experiencing digestive problems.
The doctor also noted that eggs generally do not cause constipation or bloating in most people.
People who experience discomfort after eating eggs may have an individual intolerance or another digestive issue. In such cases, identifying the cause of symptoms is more useful than assuming that eggs are unsuitable for everyone.
For a healthier digestive system, eggs can be combined with fibre-rich foods such as vegetables, fruit or whole grains.
Are brown eggs healthier than white eggs?
The colour of an eggshell is often associated with differences in nutritional quality, with some consumers believing that brown eggs are healthier or more nutritious than white ones.
Dr Sethi clarified that brown eggs are not inherently healthier than white eggs.
The shell colour is primarily determined by the breed of the hen. Brown and white eggs generally have similar nutritional profiles, although their nutritional composition can vary depending on the hen’s diet and farming conditions.
Therefore, consumers do not necessarily need to pay more for brown eggs in the belief that they offer significantly greater health benefits.
Freshness, safe storage and proper cooking are more important considerations when choosing eggs.
Why eating raw eggs can be risky
One of the important precautions highlighted by Dr Sethi was avoiding raw eggs because they may contain Salmonella bacteria.
Salmonella infection can cause food poisoning, with symptoms including diarrhoea, fever, stomach cramps and vomiting. The illness can be particularly serious for young children, older adults, pregnant women and people with weakened immune systems.
Cooking eggs thoroughly reduces the risk of infection by killing harmful bacteria.
People who need raw eggs for recipes such as certain desserts, sauces or beverages can consider using pasteurised eggs. Pasteurisation involves treating eggs to reduce harmful microorganisms while keeping them suitable for uses that do not involve conventional cooking.
However, pasteurised eggs should still be handled and stored according to food safety instructions.
How many eggs can you eat every day?
According to Dr Sethi, most healthy adults can consume one or two eggs a day.
Eggs can provide a convenient source of protein and important nutrients, but individual requirements vary. People with existing health conditions, particularly those involving cholesterol or cardiovascular risk, should consider their overall diet and seek personalised dietary advice when necessary.
The way eggs are prepared also matters. Boiled or lightly cooked eggs, prepared safely, can be included in a balanced meal. Regularly combining them with large amounts of butter, processed meat or excess salt may reduce the overall nutritional quality of the meal.
Eggs can also be paired with vegetables, whole grains and other fibre-rich foods to create a more balanced diet.
Nutrients in eggs also support eyes, hair and skin
Dr Sethi has previously highlighted the benefits of eating eggs regularly, including the nutrients that contribute to eye health and the maintenance of healthy hair, skin and nails.
Egg yolks contain two antioxidants, lutein and zeaxanthin, which accumulate in the retina and help protect the eyes from oxidative damage. These compounds are associated with maintaining eye health as people age.
Eggs also provide protein and nutrients that help the body produce keratin, a structural protein found in hair, skin and nails.
Their nutritional value comes from the combination of protein, vitamins, minerals and other compounds rather than any single ingredient.
However, eating eggs alone cannot guarantee improvements in memory, eyesight, hair growth or skin quality. These outcomes depend on several factors, including overall nutrition, lifestyle and individual health.
The takeaway
Eggs can be a nutritious and affordable addition to a balanced diet. They provide high-quality protein, choline and antioxidants that support muscle function, brain activity and eye health.
As Dr Sethi explained, most healthy adults can include one or two eggs in their daily diet, while people with specific medical conditions may need individual guidance. Eggs do not provide fibre or have a proven direct effect on improving gut bacteria, but they are generally well tolerated when properly cooked.
Choosing safe, thoroughly cooked eggs and combining them with vegetables, fruits and whole grains can help make them part of a balanced eating pattern.