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Lipids: Dietary Sources and Requirements01:18

Lipids: Dietary Sources and Requirements

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Lipids are an essential component of a balanced human diet. Triglycerides, which make up the majority of dietary lipids, are found in both saturated fats—commonly present in meat, dairy products, and certain tropical plants like coconut, and hydrogenated oils such as margarine and baking shortenings (trans fats)—and unsaturated fats, which are abundant in seeds, nuts, olive oil, and most vegetable oils. The main sources of cholesterol include egg yolks, various meats and organ...
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In human women, oogenesis produces one mature egg cell or ovum for every precursor cell that enters meiosis. This process differs in two unique ways from the equivalent procedure of spermatogenesis in males. First, meiotic divisions during oogenesis are asymmetric, meaning that a large oocyte (containing most of the cytoplasm) and minor polar body are produced as a result of meiosis I, and again following meiosis II. Since only oocytes will go on to form embryos if fertilized, this unequal...
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Probing the Limits of Egg Recognition Using Egg Rejection Experiments Along Phenotypic Gradients
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Probing the Limits of Egg Recognition Using Egg Rejection Experiments Along Phenotypic Gradients

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Eggs: good or bad?

Bruce A Griffin1

  • 1Department of Nutritional Sciences,University of Surrey,Guildford,Surrey GU2 7WG,UK.

The Proceedings of the Nutrition Society
|April 30, 2016
PubMed
Summary

Eggs are nutrient-dense and a high-quality protein source. Despite past concerns, research shows dietary cholesterol from eggs has minimal impact on cardiovascular disease (CVD) risk for most people.

Area of Science:

  • Nutrition Science
  • Cardiovascular Health
  • Dietary Cholesterol Research

Background:

  • Eggs are recognized for their exceptional nutrient-to-energy density and superior protein quality.
  • Historically, eggs were associated with negative health outcomes due to concerns about dietary cholesterol and cardiovascular disease (CVD).
  • Significant research has focused on clarifying the relationship between egg consumption, dietary cholesterol, and health.

Purpose of the Study:

  • To evaluate the nutritional value of eggs.
  • To assess the impact of dietary cholesterol from eggs on cardiovascular health.
  • To examine the association between egg intake and the risk of diabetes and CVD in diabetic individuals.

Main Methods:

  • Review of 60 years of scientific research on dietary cholesterol and egg consumption.
Keywords:
CVDCholesterolDiabetesDietaryEggs

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  • Analysis of epidemiological data and clinical studies.
  • Examination of the differential effects of dietary cholesterol on serum LDL-cholesterol in various diabetic populations.

    • Main Results:

    • A scientific consensus confirms that dietary cholesterol, primarily from eggs, has a minor effect on serum LDL-cholesterol and CVD risk compared to other dietary and lifestyle factors.
    • Dietary guidelines have been updated globally to reflect this understanding.
    • However, associations between egg intake and diabetes incidence, and increased CVD risk in diabetics, persist and require further investigation, potentially due to confounding factors or varied individual responses.

    Conclusions:

    • Eggs are nutritionally beneficial and unlikely to be detrimental to health for the general population.
    • Further research is necessary to fully understand the nuanced effects of dietary cholesterol on CVD risk, particularly within the context of diabetes (Types 1 and 2).
    • Clarifying these associations will refine dietary recommendations for managing diabetes and cardiovascular health.