Diet-to-Go Blog
  1. Dr. Mirkin Special Report: Being Slightly Overweight Shortens Life

    A review of 19 studies covering 1.5 million people shows that being even a little bit overweight shortens your life and the heavier you are, the more likely you are to die of cancer and heart attacks (New England Journal of Medicine, December 2, 2010).

    Two-thirds of North American adults are overweight or obese.

    Doctors measure overweight with a Body-Mass Index (BMI) number: your weight in kilograms divided by the square of your height in meters. A normal BMI is 22.5 to 25. Having a BMI of 27.5 increases your chances of dying from a heart attack by 50 percent, and a BMI over 40 increases risk by more than 400 percent.

    Similar increases in BMI apply to death from cancers.



    "There appears to be no such thing as metabolically healthy
    obesity," said Dr. Johan Arnlov, author of a 30-year follow up
    report of 1800 Swedish men showing that overweight middle-aged
    men are at increased risk for death and heart attacks, even if they
    do not have metabolic syndrome or diabetes (Circulation, January
    19, 2010).

    Arnlov and his colleagues checked all the men for metabolic syndrome: high blood sugar, high blood pressure, high blood triglycerides (fats), low HDL ("good") cholesterol and a broad waist size (40 inches for men, 35 for women).

    Metabolic syndrome is the presence of three or more of these risk factors.

    Follow-up for 30 years showed that the risk of a heart attack was
    52 percent higher in overweight men without metabolic syndrome,
    74 percent higher in overweight men with metabolic syndrome,
    95 percent higher in obese men without metabolic syndrome and
    155 percent higher in obese men with metabolic syndrome.



    Being overweight shortens lives because full fat cells
    produce immune cells that turn on your immunity to promote
    inflammation that causes diabetes, heart attacks, cancers,
    arthritis and other diseases.

    Losing as few as 10 pounds can reduce an over-active immune system to that of a thin person. (The Journal of Clinical Endocrinology & Metabolism, June 2010).



    The average person spends a lifetime gaining weight and
    exercise helps to prevent weight gain with aging.

    Researchers measured BMI and waist circumference in more than 3,400 men and women and followed them for 20 years. The most-active men gained 5.7 pounds less than those least active, and the most-active women gained 13.5 pounds less than the least-active
    women (JAMA, December 15, 2010).

    Many other studies show that exercising regularly helps to protect even those who continue to be overweight.



    Being even a little bit overweight shortens lives, and exercise helps to prevent weight gain with aging.

    A practicing physician for more than 40 years and a radio talk show host for 25, Dr. Gabe Mirkin is a graduate of Harvard University and Baylor University College of Medicine. He is one of a very few doctors board-certified in four specialties: Sports Medicine, Allergy and Immunology, Pediatrics and Pediatric Immunology.

    Overall Health & Nutrition
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