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Does egg yolk cause heart attack? Doctor explains
Egg yolks have long been blamed for raising cholesterol and harming heart health, but the science is far more nuanced. A gastroenterologist explains why dietary cholesterol is not the same as blood cholesterol and how overall diet matters more than a single food
It isn't new for eggs to be surrounded by more misconceptions than facts. However, recently, social media reinforced that yolk equals cholesterol, cholesterol clogs arteries, and therefore eggs cause heart disease.
But according to Dr Mahendra Singh Rajput, Gastroenterologist, Amrita Hospital, Faridabad, human metabolism is far more complex than viral health claims suggest.
“Luckily, human metabolism isn’t that linear,” he explains.
The biggest myth: dietary cholesterol vs blood cholesterol
A major source of confusion, says Dr Rajput, is the assumption that dietary cholesterol directly translates into harmful blood cholesterol.
“The confusion starts with the notion that dietary cholesterol and blood cholesterol are the same thing. They’re not,” he says.
Egg yolks do contain dietary cholesterol, but cardiovascular risk is influenced by a wider set of factors, including overall dietary pattern, genetics, metabolic health, and especially the intake of saturated and trans fats.
What research actually shows about eggs and heart health
Modern nutrition science does not support a blanket warning against eggs for the general population.
Dr Rajput points to large-scale evidence. “In 2020, an analysis of three large US cohorts published in the BMJ, along with an updated meta-analysis, found that eating up to one egg per day was not associated with an increased risk of cardiovascular disease.”
He adds that more recent evidence reinforces this nuance.
“An umbrella review of 14 meta-analyses published in 2025 also concluded that there was insufficient high-quality data to dissuade egg consumption, although there was significant heterogeneity in the literature.”
However, he cautions that findings are not entirely uniform.
“This is not to say cholesterol can be ignored. Some studies still show associations between higher egg or dietary cholesterol intake and cardiovascular outcomes in certain populations. Nutrition science is about context, not absolutes.”
Why eggs were wrongly labelled “bad”
The long-standing fear around eggs, Dr Rajput explains, comes from oversimplified nutrition messaging.
“The idea that cholesterol in food automatically raises blood cholesterol is outdated,” he says.
Instead, the body regulates cholesterol through a complex internal system, and in most healthy individuals, dietary intake has a limited effect compared to factors such as overall diet quality, saturated fat intake, genetics, and metabolic health.
While egg whites are often praised as the “healthy” part, Dr Rajput stresses that discarding the yolk also means losing valuable nutrients.
“The yolk contains significant nutritive value. If you throw it away, you are discarding nutrients along with the cholesterol,” he explains.
The key, he adds, is dietary balance rather than elimination.
What really matters: What you eat with your eggs
Eggs do not exist in isolation in a diet.
“The real question is what comes with your eggs,” says Dr Rajput. “An egg with vegetables and whole grains is metabolically very different from a breakfast loaded with butter, processed meat, refined carbohydrates and excess calories.”
This broader dietary pattern, he emphasises, has a much stronger impact on cardiovascular health than a single ingredient.
Dr Rajput also highlights evolving global guidance, including from the American Heart Association.
“The American Heart Association’s 2026 scientific guidance emphasises overall dietary pattern as the primary cardiovascular target, rather than dietary cholesterol alone,” he notes.
This reflects a wider shift in nutritional science towards holistic eating patterns rather than demonising individual foods.
Who should still be cautious?
While eggs can fit into a healthy diet, Dr Rajput advises individualised guidance for certain groups.
“An egg is generally a good fit for a well-rounded diet in healthy individuals,” he says.
“People with high LDL cholesterol, diabetes, established cardiovascular disease or other metabolic risk factors should discuss intake on an individual basis with their doctor or dietitian.”
Conclusion: It’s about patterns, not panic
The final message, according to Dr Rajput, is simple but important.
“Your arteries listen to your overall dietary pattern, not a viral reel about one ingredient,” he says.
Egg yolks, in context, are not the dietary villain they were once made out to be. Like most foods, their impact depends less on fear-based assumptions and more on the balance of what sits on the plate as a whole.
Anuj is a senior sub-editor (lifestyle desk) at Firstpost who covers food, travel, health, and fitness, mostly because they’re all excellent excuses to leave the house. Powered by coffee, he spends his downtime airplane-spotting and exploring spirituality, hoping one day to understand both turbulence and the universe.