How much dietary cholesterol is too much?
The risk from dietary cholesterol is dose-dependent: the more you eat, the higher your risk. A large meta-analysis of 49 studies found that each additional 300 mg of cholesterol per day (roughly the amount in 1.5 eggs) was associated with a 10% higher risk of dying from any cause and a 13% higher risk of dying from cardiovascular disease [1]. Another meta-analysis of 55 studies reported that each 100 mg/day increment raised all-cause mortality risk by 6% [2]. In a study of 180,000 US veterans, people who ate more than 300 mg/day had a 15% higher risk of heart attack compared to those who ate less [5]. The message is clear: the risk climbs steadily with intake, and there is no safe upper limit where it plateaus.
Does the risk apply to everyone equally?
No—the effect of dietary cholesterol varies by population and individual health status. In US and European cohorts, the link between egg consumption and cardiovascular disease was clear: each extra egg per day raised risk by 8% in US studies and 5% in European studies [1]. But in Asian cohorts, the same amount of egg intake showed no increased risk [1]. This may be due to differences in how cholesterol is absorbed or metabolized, or because Asian diets tend to be lower in saturated fat overall. People with existing health conditions are also more vulnerable: among stroke survivors, each 100 mg/1000 kcal of cholesterol raised all-cause mortality risk by 16% and cardiovascular mortality by 15% [3]. And a study from the UK Biobank found that the link between dietary cholesterol and diabetes or cardiovascular disease disappeared after adjusting for body mass index, suggesting that obesity may be a stronger driver of risk than cholesterol itself [4].
What about eggs specifically? Are they still bad for your heart?
Eggs are the main source of dietary cholesterol for most people, and the evidence shows that eating more than one egg per day is linked to higher risk. In the meta-analysis of 55 studies, each additional egg per day was associated with a 7% higher risk of all-cause mortality and a 13% higher risk of cancer mortality [2]. The same study found that risk started to increase noticeably above 1.5 eggs per day [2]. Among stroke survivors, eating more than one egg per day raised all-cause mortality risk by 40% [3]. However, moderate consumption—up to about one egg per day—appeared safe in several analyses [2][3]. The bottom line: one egg a day is likely fine for most people, but going beyond that may carry real risk, especially if you already have heart disease risk factors.
What about other types of cholesterol in your blood?
While dietary cholesterol is one piece of the puzzle, the cholesterol that circulates in your blood is a more direct predictor of heart disease. High LDL cholesterol (the 'bad' kind) is strongly linked to heart attacks and strokes. A massive Chinese study of 3.8 million people found a U-shaped relationship: both very low and very high LDL levels were associated with higher mortality, with the lowest risk around 90–118 mg/dL depending on the person's risk profile [6]. But there's another type—remnant cholesterol, carried in triglyceride-rich particles—that may be even more dangerous. People with remnant cholesterol levels above 39 mg/dL (about 22% of the population) had a 2.2-fold higher risk of dying from cardiovascular disease [7]. Adding remnant cholesterol to standard risk models correctly reclassified 23% of people who later had a heart attack [8]. So while cutting dietary cholesterol helps, your blood cholesterol profile—especially LDL and remnant cholesterol—is what ultimately determines your risk.
About These Sources
This answer is built on 8 peer-reviewed studies — published from 2022 to 2025, 4 from 2024 or later, 8 in Q1 journals, collectively cited 441 times — selected as the most relevant from 12 studies that passed quality screening, drawn from 62 papers retrieved from a database of over 500 million.
Sources used in this answer
Associations of Dietary Cholesterol, Serum Cholesterol, and Egg Consumption With Overall and Cause-Specific Mortality: Systematic Review and Updated Meta-Analysis
In a prospective cohort of 27,078 men and a meta-analysis of 49 studies, each additional 300 mg/day of dietary cholesterol was associated with a 10% higher risk of overall mortality and a 13% higher risk of cardiovascular mortality; each extra egg per day raised CVD risk by 4% overall, but the effect varied by region (stronger in US, null in Asia).
Egg and Dietary Cholesterol Intake and Risk of All-Cause, Cardiovascular, and Cancer Mortality: A Systematic Review and Dose-Response Meta-Analysis of Prospective Cohort Studies
In a meta-analysis of 55 prospective cohort studies (2.8 million participants), each additional egg per day was linked to a 7% higher risk of all-cause mortality and a 13% higher risk of cancer mortality; each 100 mg/day of dietary cholesterol raised all-cause mortality by 6% and cancer mortality by 6%.
Dietary cholesterol intake and egg consumption in relation to all-cause and cardiovascular mortality after stroke
Among 1,367 US stroke survivors, each 100 mg/1000 kcal increase in dietary cholesterol was linked to a 16% higher risk of all-cause mortality and a 15% higher risk of cardiovascular mortality; eating more than one egg per day raised all-cause mortality risk by 40%.
Associations of Dietary Cholesterol Consumption With Incident Diabetes and Cardiovascular Disease: The Role of Genetic Variability in Cholesterol Absorption and Disease Predisposition
In 96,826 UK Biobank participants, each additional 300 mg/day of dietary cholesterol was associated with a 17% higher risk of diabetes and a 9% higher risk of CVD, but these associations disappeared after adjusting for body mass index, suggesting obesity may be the key driver.
Dietary Cholesterol and Myocardial Infarction in the Million Veteran Program
In 180,156 US veterans followed for 3.5 years, each 100 mg/day increment in dietary cholesterol was associated with a 5% higher risk of myocardial infarction; those consuming >300 mg/day had a 15% higher risk compared to those consuming less.
Low-Density Lipoprotein Cholesterol, Cardiovascular Disease Risk, and Mortality in China
In 3.8 million Chinese adults, the association between LDL cholesterol and mortality was U-shaped; the lowest cardiovascular mortality risk was at LDL levels of 117.8 mg/dL in low-risk individuals and 55.8 mg/dL in those with prior cardiovascular disease.
Elevated remnant cholesterol, plasma triglycerides, and cardiovascular and non-cardiovascular mortality
In 87,192 Danish adults, remnant cholesterol ≥39 mg/dL (present in 22% of the population) was associated with a 2.2-fold higher risk of cardiovascular mortality and a 2.1-fold higher risk of death from other causes, but not from cancer.
Elevated Remnant Cholesterol Reclassifies Risk of Ischemic Heart Disease and Myocardial Infarction
In 41,928 Danish adults without prior heart disease, adding remnant cholesterol to standard risk models correctly reclassified 23% of individuals who later had a heart attack from below to above the 5% 10-year risk threshold.