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Home / Health / Obesity, low BMI linked to increased risk of death, study reveals

Obesity, low BMI linked to increased risk of death, study reveals



The study, published Wednesday in The Lancet Diabetes and Endocrinology and conducted by scientists at the London School of Hygiene and Tropical Medicine, found that BMI that is either too high or too low is becoming morbidity from a range of major diseases.

Krishnan Bhaskaran, lead author of the study and Associate Professor of Statistical Epidemiology, noted that his team found "important associations" between BMI and most causes of death.

"BMI is a key indicator of health." We know that BMI is linked to the risk of dying overall, but surprisingly little research has been conducted on the left to deaths of specific causes, "he said.

"BMI is determined by dividing a person's"

"BMI is determined by dividing a person's" weight in kilograms by the square of their height in meters.

The BMI in the range of 21

to 25 kg / m2 is linked to the lowest level of morbidity.

BMI outside this range shows what a J-shaped association is, with nearly all causes of death, not the most prevalent diseases. This means BMIs both lower and higher than the optimal range to increased risk of morbidity.

The study, which analyzed data from 3.6 million people and 367,512 deaths, showed that obesity, or BMI of 30 or more, which linked to an increased prevalence of two major causes of death: heart disease and cancer.

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"BMI higher than 25, the upper end of healthy, is linked to most cancers, most cardiovascular diseases, respiratory disease, and liver and kidney conditions, "Bhaskaran said.

Obesity was shown to reduce life expectancy by 4.2 years in men and 3.5 years in women, and it may contribute to other chronic conditions including respiratory disease, liver disease and diabetes.

The British Journal of Cancer reported in April that obesity is linked to 7.5% of cancers in UK.

The Charity Cancer Research UK estimated that 23,000 women want to deal with obesity-related cancers by 2035. Obesity wants to become so the most common cause of cancer in women by 2043 if trends continue.

However, Bhaskaran noted that "between BMI and causes of death were more "observative," as it were, which was less clear;

He thus acknowledged the limitations of the study, which included a lack of information on the diet or level of physical activity and the impact of these factors on morbidity.

Note the BMI within the 21 to 25 range.

In particular, the lowest risk of cardiovascular death was associated with a BMI of 25 kg / m2, with an additional 5 kg / m2 associated with a 29% increased risk of morbidity.

The lowest risk BMI of 21 kg / m2, with every additional 5 kg / m2 associated with a 13% increased risk of death.


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