Eggs and Cholesterol – A Pervasive Nutritional Myth!

Many people have heard dire warnings about eggs and cholesterol, but is there any truth to this widely held belief at all? The answer is NO! Eggs have not been shown to significantly raise LDL (low density lipoproteins) levels when eaten in moderation. In fact eggs are actually be considered beneficial  when cooked and eaten properly and in moderate amounts.

eggs and cholesterol

Please note that the term LDL refers to the form considered by cardiologists to be “bad,”  however we will show in other posts that the idea of good and bad cholesterol is a misapplication of the science!.

Lipoproteins are another term for cholesterol. Thus HDL cholesterol is high density lipoproteins, and LDL is used  to refer to “low density lipoprotein.” The type that is believed by scientists to actually cause problems is called vldl cholesterol, (very low density lipoproteins). However even in this case the truth is more complicated than this and we will explain this as we go along.

The Facts about Eggs…

The fact is that egg yolks also contain lecithin which is a phosopholipid compound that actually lowers the amount your body absorbs. Thus the cholesterol in an egg does not have the same effect in your body, that it does when it comes from other sources.

Eggs contain about 185 milligrams of cholesterol (for a large egg), but they are also high in vitamin-d, choline (a b-vitamin) and lecithin. Interestingly, the saturated fat content in eggs is low. Research studies have shown that foods that you eat, does not have necessarily cause high cholesterol levels in your body, and in some cases may actually lower it!

It appears that the eggs and cholesterol myth began when the concern over lipoprotein levels being a factor in heart disease emerged. Researchers jumped to conclusions and people were warned that eggs greatly increased the risk of heart disease, based on this assumption, (based on poorly done research).

Eggs are Essential Sources of Choline

One negative result of this eggs and cholesterol hysteria was that people stopped eating eggs, or at least significantly cut down on egg consumption. The b-vitamin choline is essential to good health, especially of the brain.

The most abundant source of this vitamin in most people’s diets came from eggs. As a result the population as a whole became deficient in choline, leading to other serious health problems like Alzheimer’s Disease, and even increased rates of heart disease!

Choline is vital to the healthy function of the brain and nervous system, which in turn has a huge impact on heart health. Thus by limiting egg consumption and producing deficiency of choline in the diet, people were actually making the situation with regard to heart disease even worse!

What The Research Says…

Some people who have a genetic tendency toward higher levels called (familial hypercholesterolemia) may be affected by the amount they consume in their foods, but the mechanism is not totally clear. In fact the famous Framingham Study of heart disease shows that people with the highest hdl cholesterol levels actually lived the longest!

Recent research conducted on eggs and cholesterol at the University of Surrey by Dr. Bruce Griffin found that two eggs per day consumed by healthy people for a 12 week period actually lowered their LDL levels on average! It was concluded that eggs will not significantly raise cholesterol numbers in a healthy person. In this instance eggs actually lowered their levels!

In face the research subjects in the experimental group actually lost weight as well. This may seem surprising, but in light of the fact that egg yolks contains beneficial vitamins and high quality protein, it supplies your body with vital nutrients, without which you can’t achieve optimal health.

Recent research has also suggested that eggs may act in a way to reduce high blood pressure and that they contain antioxidants that help prevent heart disease. While this evidence is not yet conclusive, it suggests that eggs, far from being dangerous to our health are actually beneficial in preventing both cancer and heart disease!

Nutritional myths about eggs and cholesterol still persist in medicine and are accepted by the public at large, but gradually the word is getting out that eggs are not a bad food at all, in fact you need the beneficial nutrients in eggs for good health, including heart health!

References:

Chamila Nimalaratne, Daise Lopes-Lutz, Andreas Schieber, Jianping Wu. Free aromatic amino acids in egg yolk show antioxidant properties. Food Chemistry, 2011; 129 (1): 155 DOI:
Majumder et al. Angiotensin I Converting Enzyme Inhibitory Peptides from Simulated in Vitro Gastrointestinal Digestion of Cooked Eggs. Journal of Agricultural and Food Chemistry, 2009; 57 (2): 471 DOI:

2 Thoughts on “Eggs and Cholesterol – A Nutritional Myth

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