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Cholesterol

    • 445 posts
    December 9, 2013 3:37:06 PM PST

     

    Cholesterol

    Cholesterol is an organic compound belonging to the family of steroidal lipids . It is an essential element of our body as it is a component of cell membranes regulating fluidity and permeability ;
    it is the precursor of steroid hormones , both male and female (testosterone, progesterone, cortisol, etc. . ), vitamin D and bile salts .
    However, high levels of cholesterol are very dangerous for your health.
     
    Foods high in cholesterol are :eggs, butter , meat , cheese and some shellfish (shrimps, prawns).

    Approximately 80-90 % of the total cholesterol is produced by our own body , especially liver , adrenal gland and sex glands . This is the reason why some people, despite a regular diet and a regular program of physical activity, maintain high levels of cholesterol. When endogenous production is physiologically high it is called familial hypercholesterolemia .

    In general hypercholesterolemia is characterized by a higher concentration of cholesterol in the blood.
    Please check typical values:

     
    <200 mg / dl Cholesterol Normal
    200-249 mg / dl mild hypercholesterolemia
    250-299 mg / dl Moderate Hypercholesterolemia
    > 299 mg / dl Severe Hypercholesterolemia

    Cholesterol binds mainly to low-density lipoprotein or LDL (the so-called bad cholesterol) . It is estimated that approximately 70 % of the total cholesterol is linked to LDL.

    The excess cholesterol linked to these lipoproteins tends to accumulate on the endothelium of the arteries , forming aggregates increasingly dense up to generate real plaques , called atheromas .
    These plaques are deteriorating the natural elasticity of the arteries and cause severe damage to the heart (heart attack) or the brain (stroke).
    Good cholesterol is represented by the HDL ( high density lipoprotein ) that clean the arteries capturing and transferring excess cholesterol to tissues, where it is disposed of .
     
    HDL should not be less than 30% of total cholesterol (LDL + HDL) or, using the index of cardiovascular risk which correlates total cholesterol and HDL, if ratio is greater than 5 in men and 4.5 in women, the patient is considered at risk.



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    This post was edited by DrSocial Admin at April 10, 2014 11:38:50 AM PDT