Does Extra Weight Add Extra Years To Your Life?

Main Category: Obesity / Weight Loss / Fitness
Also Included In: Nutrition / Diet
Article Date: 10 Sep 2009 - 23:00 PDT


Recently, some researchers have suggested that individuals that are overweight live longer. But what is the real key to longevity? Dietitians of Canada (DC) has looked at the evidence and concludes that all individuals, regardless of their weight, can benefit from healthy eating and regular physical activity. Moreover, excess weight is clearly linked to serious health consequences. Prevention and treatment of overweight and obesity remains a priority.

Body Mass Index (BMI) is the method of classification recommended for use by Health Canada. It is a standardized index of weight-for-height describing health risks. Evidence suggests individuals classified as underweight (BMI lower than 18.5), overweight (BMI between 25 and 29.9) and obese (BMI 30 and over) are at increased risk of morbidity (illness) and mortality (death). However, some studies have shown that overweight individuals had a significantly decreased risk of mortality compared to normal-weight individuals.

"The association between BMI and mortality is complex," says Kate Storey, registered dietitian and author of the review document Weighing the issue: What is the real key to longevity? "Other measures such as body composition and waist circumference, in combination with BMI, may better predict and reflect the complex relationship between overweight/obesity and mortality."

"One must keep longevity within the context of health, added Storey. A healthy weight does not guarantee a longer life, nor does longevity guarantee health. While longevity is a multifaceted issue, lifestyle behaviours, such as eating well and regular physical activity, are definite steps in the right direction to a long and healthy life."

Source
Dietitians of Canada

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