Do Eggs Have a Lot of Cholesterol? What Science Says

Yes, eggs contain a significant amount of cholesterol—about 186 mg per large egg, all in the yolk—but for most people, eating eggs does not greatly affect blood cholesterol levels or heart disease risk. The bigger concern is saturated fat, which has a much stronger effect on raising LDL ("bad") cholesterol. Current evidence suggests that moderate egg consumption (up to one egg per day) is safe for most healthy adults, but those with diabetes or existing heart disease may need to be more cautious.

How Much Cholesterol Is in an Egg?

All the cholesterol in an egg is found in the yolk. A single large egg contains approximately 186 mg of cholesterol, which is more than half the previously recommended daily limit of 300 mg. However, dietary cholesterol is no longer considered a nutrient of concern for most people because it has a relatively small impact on blood cholesterol compared to saturated and trans fats.

The Mayo Clinic notes that if your diet contains little other cholesterol, eating an egg a day may be fine for most people. But if you already have high cholesterol or diabetes, you may need to limit your intake to no more than three eggs per week, according to St. Vincent's Medical Center. For related context, see our guide to Is Shrimp High in Cholesterol? What to Know.

Dietary Cholesterol vs. Blood Cholesterol: What Matters More?

For decades, eggs were vilified because of their cholesterol content. The assumption was that eating cholesterol-rich foods directly raises blood cholesterol. However, research has shown that the relationship is not that simple. The liver produces most of the cholesterol in your body, and when you eat more cholesterol, your liver often compensates by producing less. Saturated fat and trans fat have a much greater effect on raising LDL cholesterol than dietary cholesterol does.

A 2025 study published in The American Journal of Clinical Nutrition and summarized by Harvard Health found that in adults with high LDL, increases in LDL were significantly related to saturated fat intake but not to cholesterol intake from eggs. In fact, participants who ate two eggs per day as part of a low-saturated-fat diet actually lowered their LDL levels.

Harvard Health also explains that eggs contain only about 1.5 grams of saturated fat per egg and no trans fats, making them a relatively heart-healthy choice when prepared without added fats.

What Does the Research Say About Eggs and Heart Health?

Most recent studies and meta-analyses have found no significant link between moderate egg consumption and increased risk of heart disease or stroke in healthy people. A 2020 review published in PMC concluded that eggs are compatible with a diet that reduces serum cholesterol concentrations in humans, and that eggs provide valuable nutrients.

However, some studies have suggested a possible increased risk for people with diabetes. The exact reason is unclear, but it may relate to how cholesterol metabolism differs in diabetes. Therefore, individuals with diabetes or existing heart disease should consult their healthcare provider about egg intake.

How Many Eggs Can You Safely Eat?

For most healthy adults, eating one egg per day is considered safe and does not increase heart disease risk. The Harvard Health article states that eating an egg per day is safe for most healthy people, and the benefits of protein, vitamins, and minerals outweigh the small amount of saturated fat.

If you have high cholesterol, diabetes, or heart disease, you may need to be more cautious. St. Vincent's recommends limiting to less than three eggs per week if you have high cholesterol. The Mayo Clinic suggests that if you like eggs but want to limit cholesterol, you can use only the egg whites, which contain no cholesterol.

How to Include Eggs in a Heart-Healthy Diet

Eggs are a nutrient-dense food, providing high-quality protein, vitamins, minerals, and antioxidants. One large egg has 6 grams of protein and only 70 calories. To keep eggs heart-healthy:

• Prepare them by poaching, boiling, or cooking in a small amount of olive oil instead of butter.
• Avoid adding high-saturated-fat ingredients like cheese, bacon, or sausage.
• Pair eggs with vegetables such as spinach, mushrooms, or tomatoes.
• If you need to strictly limit cholesterol, use egg whites or egg substitutes.

Remember that what you eat with your eggs matters as much as the eggs themselves. A breakfast of eggs with bacon and buttered toast is very different from a vegetable omelet cooked in olive oil.

Bottom Line

Eggs do contain a lot of cholesterol—186 mg per large egg—but for most people, dietary cholesterol has a minimal effect on blood cholesterol. Saturated fat is the bigger culprit. Moderate egg consumption (up to one per day) is safe for healthy adults and can be part of a heart-healthy diet. If you have diabetes or heart disease, talk to your doctor about your individual limits.