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Related Concept Videos

Structure of Lipids03:38

Structure of Lipids

Lipids include a diverse group of compounds that are largely nonpolar in nature. This is because they are hydrocarbons that include mostly nonpolar carbon-carbon or carbon-hydrogen bonds. Non-polar molecules are hydrophobic (“water fearing”), or insoluble in water. Lipids perform many different functions in a cell. Cells store energy for long-term use in the form of fats. Lipids also provide insulation from the environment for plants and animals. For example, they help keep aquatic birds and...
Lipids: Dietary Sources and Requirements01:18

Lipids: Dietary Sources and Requirements

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 meats, shellfish,...
Obesity01:24

Obesity

The Body Mass Index (BMI) is a numerical value derived from a person's weight and height, used to categorize individuals into weight ranges. It is calculated using the formula: weight in kilograms divided by height in meters squared. Obesity is a health condition characterized by excessive accumulation of adipose tissue that poses health risks, often diagnosed with a BMI ≥ 30. This excess fat storage occurs when surplus dietary calories are converted into triglycerides and stored in adipocytes...
Overview of Fatty Acid Metabolism01:28

Overview of Fatty Acid Metabolism

Lipids also are sources of energy that power cellular processes. Like carbohydrates, lipids are composed of carbon, hydrogen, and oxygen, but these atoms are arranged differently. Most lipids are nonpolar and hydrophobic. Major types include fats and oils, waxes, phospholipids, and steroids.
Fatty acids are catabolized in a process called beta-oxidation, which takes place in the matrix of the mitochondria and converts their fatty acid chains into two-carbon units of acetyl groups. The acetyl...
Fats as Energy Storage Molecules01:06

Fats as Energy Storage Molecules

Triglycerides are a form of long-term energy storage molecules. They are made of glycerol and three fatty acids. To obtain energy from fat, triglycerides must first be broken down by hydrolysis into their two principal components, fatty acids and glycerol. This process, called lipolysis, takes place in the cytoplasm. The resulting fatty acids are oxidized by β-oxidation into acetyl-CoA, which is used by the Krebs cycle. The glycerol that is released from triglycerides after lipolysis directly...
Fats as Energy Storage Molecules01:06

Fats as Energy Storage Molecules

Triglycerides are a form of long-term energy storage molecules. They are made of glycerol and three fatty acids. To obtain energy from fat, triglycerides must first be broken down by hydrolysis into their two principal components, fatty acids and glycerol. This process, called lipolysis, takes place in the cytoplasm. The resulting fatty acids are oxidized by β-oxidation into acetyl-CoA, which is used by the Krebs cycle. The glycerol that is released from triglycerides after lipolysis directly...

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Semi-Automated Isolation of the Stromal Vascular Fraction from Murine White Adipose Tissue Using a Tissue Dissociator
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Trans fat bans and human freedom.

David Resnik1

  • 1National Institutes of Health, National Institutes of Environmental Health Science, Research Triangle, NC, USA. resnikd@niehs.nih.gov

The American Journal of Bioethics : AJOB
|March 16, 2010
PubMed
Summary

Trans fatty acid bans aim to improve cardiovascular health. However, these policies raise concerns about government overreach, potentially limiting dietary choices and cultural practices.

Area of Science:

  • Public Health Policy
  • Nutritional Science
  • Food Regulation

Background:

  • Growing evidence links trans fatty acid consumption to cardiovascular disease.
  • Public health initiatives in the U.S. include bans on artificial trans fats in restaurants.
  • Potential for widespread government control over food choices exists.

Purpose of the Study:

  • To evaluate the public health implications of trans fatty acid bans.
  • To examine the potential for excessive government control over food.
  • To assess the impact on dietary choices, cultural traditions, and socioeconomic factors.

Main Methods:

  • Policy analysis of trans fatty acid bans.
  • Review of scientific evidence linking trans fats to cardiovascular disease.

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Measuring Oral Fatty Acid Thresholds, Fat Perception, Fatty Food Liking, and Papillae Density in Humans
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  • Examination of potential societal impacts of food regulations.

    • Main Results:

    • Trans fatty acid bans may improve cardiovascular health.
    • These policies could lead to increased government control over food.
    • Concerns exist regarding restricted dietary choices and cultural interference.

    Conclusions:

    • Trans fatty acid bans require substantial scientific evidence.
    • Less restrictive policies like education and labeling should be considered first.
    • Balancing public health goals with individual freedoms is crucial.