A new study that concludes one egg a day doesn’t necessarily increase heart disease risk is the latest in a long line of conflicting research. Getty Images
A Funny or Die sketch set in 1979 begins with a man sitting down for breakfast of steak, eggs, and toast.
Suddenly, a bright light flashes in the next room and a stranger walks into the kitchen, startling the man and his wife.
“Wait! Stop! Don’t eat that food,” the stranger says.
Confused, the man asks, “Why?”
“The eggs,” the stranger says. “They’re full of cholesterol.”
The couple seems confused because few people in the late 1970s were worried about the goopy substance that can clog your arteries.
The stranger warns the couple that eating one egg a day drastically increases the chance of a heart attack.
The time traveling dietitian leaves, only to return again from the future, declaring there’s two types of cholesterol and eggs have both the good and bad kind.
This goes on for some time, as the man comes back again and again, updating the couple on what scientists in the future will learn about the other foods on the man’s plate.
While a comical rendition of evolving food science, the skit is still relatively accurate in terms of what studies have shown in terms of eggs, what’s in them, and whether they’re part of a healthy diet.
That debate remains important as people in the United States continue to consume eggs more than they have in nearly half a century. On average, we eat 289 eggs per year, or more than five per week.
That comes as new dietary guidelines drop restrictions on cholesterol, reflecting the views of many nutritionists that an egg’s cheaply provided nutrient content outweighs other concerns.
Much like the time traveling dietician points out, nutritionists now say dietary cholesterol isn’t as lethal as we thought some 40 years ago.
But experts agree that diet is a tricky thing to study because not everyone eats in a vacuum, consuming the same thing day-in and day-out in a controlled and easy-to-study environment.
For example, a bacon cheeseburger topped with a fried egg and served with a side of french fries. What, of those components — beef, pork fat, cheese, egg, bun, fries dipped in sugar-laden ketchup, egg — is the main culprit?
Some heart experts may argue the egg might not be the worst offender.
“Eggs are safe, as long as not consumed in high numbers daily,” Patel told Healthline.
The latest in the long saga of the egg’s long pile of scientific research comes out of the Population Health Research Institute (PHRI) of McMaster University and Hamilton Health Sciences in Ontario, Canada.
There, researchersTrusted Source used data from about 177,000 people involved in one of three long-term studies conducted in 50 countries.
The researchers had a simple premise: Since they find eggs to be “a rich source of essential nutrients,” they wanted to check what the available facts have to say on their impact on preventable diseases, as there’s contradictory evidence as to what their cholesterol content means to human health.
Using data from PHRI studies named PURE, ONTARGET, and TRANSCEND, the researchers counted 12,701 deaths and 13,658 cardiovascular disease “events,” such as a heart attack.
With that data, researchers reported they didn’t find any “significant” connections between eating eggs, the collection of cholesterol in the blood, premature deaths, or major cardiovascular disease events.
That led researchers to conclude that, for most people, eating one egg per day doesn’t increase their risk of cardiovascular disease or death, even if their risk factors would suggest otherwise.
The researchers further concluded there’s no link between the number of eggs a person eats and the cholesterol that ends up in their blood.
But before you go and order a 12-egg omelet on your next brunch outing, pause and consider where the study found its home.