24 April 2012

Eating Eggs Are Healthy and Beneficial To HDL Metabolic Syndrome and Satiety


There are common misconceptions about eggs and heart disease. The Harvard Heart Letter published an article about this in 2006.

In the article, the publication clarifies the facts and myths about the egg. They note that eggs are a good source of nutrients and that they have a lot of cholesterol.

But they debunk the myth that all that cholesterol goes straight to the bloodstream and then into the arteries. The article clarifies that only a small amount of the cholesterol in food passes into the blood. Saturated and trans fats have much bigger effects on blood cholesterol levels.

They also clear up the myth that eating eggs is bad for the heart. The only large study to look at the impact of egg consumption on heart disease—not on cholesterol levels or other intermediaries—found no connection between the two. In people with diabetes, though, egg-a-day eaters were a bit more likely to have developed heart disease than those who rarely ate eggs.

Eating one a day should be okay, especially by cutting back on saturated and trans fats. Other ways to enjoy eggs without worrying about cholesterol include not eating the yolk, which contains all the cholesterol, or using pourable egg whites or yolk-free egg substitutes.

Egg nutrition research reveals positive impact on metabolic syndrome and satiety

At Experimental Biology (EB) 2012 in San Diego, experts are convening to discuss the latest science in a variety of health and disease-related areas, including nutrition. Research on whole egg consumption in individuals with metabolic syndrome as well as the positive effects of a higher-protein breakfast is further revealing the potential benefits of including eggs in the diet.

Video: Egg Nutrition


Whole Egg Consumption May Improve Markers of Metabolic Syndrome

A University of Connecticut study presented this week suggests that eating eggs may actually have favorable effects on HDL metabolism in men and women with metabolic syndrome.(1)

HDL is High-density lipoprotein. HDL cholesterol is known as "good cholesterol." HDL travels the bloodstream removing harmful bad cholesterol from where it doesn't belong.

Participants in the study followed a carbohydrate-restricted diet with some individuals eating three whole eggs per day and others eating an equivalent amount of egg substitute. After 12 weeks, the group eating whole eggs experienced an improvement in HDL measures showing significantly greater increases in the number and size of HDL particles. HDL or "good" cholesterol scavenges for fat throughout the bloodstream and returns it to the liver, making it less likely that fatty deposits will build up in the blood vessels and lead to atherosclerosis.

Related findings were also presented in separate sessions that suggest that consuming whole eggs as part of a carbohydrate-restricted diet may help to further improve markers indicative of inflammation, such as tumor necrosis factor-alpha, in individuals with metabolic syndrome.(2)

Egg Nutrition Facts
Higher-Protein Breakfast Reduces High-Fat Snacking

A study by researchers at the University of Missouri found that teen girls reported greater feelings of satiety and experienced improved hormone responses related to hunger and satiety after consuming a higher-protein breakfast, containing about 35 grams of protein from egg or beef-based foods. Teen girls who consumed a high-protein breakfast also ate fewer snacks, especially those higher in fat, later in the day.(3) These findings build on past research showing the benefits of high-quality protein on satiety, further supporting the science behind what makes eggs such a satisfying breakfast choice.(4)

Clarifying Cholesterol Confusion

Many Americans avoid the dietary cholesterol found in eggs for fear of raising their risk of heart disease, but more than 40 years of research has shown that healthy adults can enjoy eggs without concern for increasing their risk for heart disease. Additionally, an analysis from the United States Department of Agriculture's Agricultural Research Service showed that eggs have 14 percent less cholesterol (down from 215 mg to 185 mg) than previously measured.(5) Established research also has shown that saturated fat intake may be more likely to raise a person's blood cholesterol than dietary cholesterol intake and eggs contain relatively little saturated fat.(6) The findings presented at this week's meeting in combination with the decades of science demonstrating the health benefits of eating eggs further support the role of eggs in a nutritious diet.

RELATED LINKS

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Experimental Biology
University of Connecticut
University of Missouri
Egg Nutrition and Heart Disease : Eggs aren't the dietary demons they're cracked up to be
Agricultural Research Service
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References:

1 Andersen CJ, Blesso CN, Park Y, Barona J, Pham T, Lee J and Fernandez ML. Carbohydrate restriction favorably affects HDL metabolism in men and women with metabolic syndrome: addition of egg yolk further increases large HDL particles. Experimental Biology 2012. San Diego, CA. April 23, 2012.

2 Blesso CN, Andersen CJ, Barona J, Volk B, Volek JS and Fernandez ML. A moderate carbohydrate-restricted diet results in weight loss and improves clinical parameters of metabolic syndrome in adult men and women and addition of egg yolk further improves inflammation. Experimental Biology 2012. San Diego, CA. April 23, 2012.

3 Leidy HJ, Ortinau LC, Douglas SM, Hoertel HA. Effects of Increased Dietary Protein at Breakfast on Appetite Control & Energy intake Throughout the Day in Overweight 'Breakfast Skipping' Teen Girls. Experimental Biology 2012. San Diego, CA. April 23, 2012.

4 Leidi HJ, Racki EM. The addition of a protein-rich breakfast and its effects on acute appetite control and food intake in 'breakfast-skipping' adolescents. International Journal of Obesity. E-pub ahead of print February 2010.

5 US Department of Agriculture, Agricultural Research Service, 2011. USDA National Nutrient Database for Standard Reference, Release 23. Online. Available at: Nutrient Data Laboratory Home Page. Accessed October 24, 2011.

6 Siri-Tarino PW, Sun Q, Hu FB, Krauss RM. Saturated fat, carbohydrate, and cardiovascular disease. Am J Clin Nutr. 2010;91: 535-546.