The egg is standard breakfast fare, but many people may be wondering whether eggs are healthy.
At just 78 calories each, eggs are an efficient, rich source of protein and vitamins. A large egg contains about 6 grams of protein. Eggs also are a good source of other nutrients, including vitamin D (which aids bone health and the immune system) and choline (which helps metabolism and liver function, as well as fetal brain development).
Egg yolks also can be good for the eyes; they are significant sources of lutein and zeaxanthin, which have been found to reduce the risk of cataracts and macular degeneration, the leading cause of blindness in people 55 and older.
But egg yolks are also known for their cholesterol. A typical large egg contains 186 milligrams of cholesterol. That’s more than half the amount previously recommended for daily consumption before federal dietary guidelines dropped the numerical goal in 2015, citing a lack of scientific evidence for a specific limit.
The sunny side of eating eggs?
“We are probably more embracing of eggs within a heart-healthy dietary pattern than we were 20 years ago, but it’s still a source of dietary cholesterol,” said Jo Ann Carson, professor of clinical nutrition at UT Southwestern Medical Center in Dallas. “Eating an egg a day as a part of a healthy diet for healthy individuals is a reasonable thing to do.”
A study published in May in the journal Heart found that an egg a day just may keep the doctor away.
Researchers studied nearly half a million Chinese adults over nine years and found up to one egg per day led to a lower risk of heart disease and stroke. Experts have pointed out, however, that participants in that study were not eating a Western diet.
Another study from May, published in The American Journal of Clinical Nutrition, found that eating at least 12 eggs a week for three months did not increase cardiovascular risk factors for people with prediabetes and type 2 diabetes. That result went hand-in-hand with a healthy diet designed to help study participants lose weight.
Whether (and how) to eat eggs
The key, Carson said, is for people to know their risk factors. In general, people at risk for heart disease, who have diabetes or who have had a heart attack should pay close attention to the amount of cholesterol in their diet, she said.
But that’s not to say cholesterol makes eggs a harmful choice. Carson pointed out that if a person’s diet contains little other cholesterol, eggs may be considered less dangerous.
“For someone who’s decided to go vegetarian, and they’re not eating red meat, maybe the only source of cholesterol would be in an egg,” she said. “Those individuals could probably include eggs a little bit more in their diet.”
Eggs must be refrigerated and should be cooked fully because there’s an increased risk of salmonella with raw eggs. Common ways of cooking eggs include boiling, poaching, scrambling or frying.
Edited by: JV Staff
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