Obesity Kills More Americans Than Previously Thought

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A latest study conducted by a group of scientist in Columbia University found that One in five Americans,Black and White die from obesity.According to the research team Obesity is a lot more deadly than previously thought. Across recent decades, obesity accounted for 18 percent of deaths among Black and White Americans between the ages of 40 and 85.This finding challenges the prevailing wisdom among scientists, which puts that portion at around 5%.

“Obesity has dramatically worse health consequences than some recent reports have led us to believe,” says first author Ryan Masters, PhD, who conducted the research as a Robert Wood Johnson Foundation Health & Society Scholar at Columbia University’s Mailman School of Public Health. “We expect that obesity will be responsible for an increasing share of deaths in the United States and perhaps even lead to declines in U.S. life expectancy.”

Nowadays obesity is very common even in young people .the increasing number of children and adults who are already obese is to be near historic highs.In older Americans, the rising toll of obesity is already evident. Dr. Masters and his colleagues documented its increasing effect on mortality in White men who died between the ages of 65 and 70 in the years 1986 to 2006. Grade one obesity (body mass index of 30 to less than 35) accounted for about 3.5% of deaths for those born between 1915 and 1919—a grouping known as a birth cohort. For those born 10 years later, it accounted for about 5% of deaths. Another 10 years later, it killed off upwards of 7%.

This study is the first to account for differences in age, birth cohort, sex, and race in analyzing Americans’ risk for death from obesity. “Past research in this area lumped together all Americans, but obesity prevalence and its effect on mortality differ substantially based on your race or ethnicity, how old you are, and when you were born,” says Dr. Masters. “It’s important for policy-makers to understand that different groups experience obesity in different ways.”

obesity in americans

Obesity’s Varying Effects by Sex and Race

In the groups studied, Black women had the highest risk of dying from obesity or being overweight at 27 percent, followed by White women at 21 percent. Obesity in Black women is nearly twice that of White women. White men fared better at 15%, and the lowest risk for dying from being obese was 5%, for Black men. While White men and Black men have similar rates of obesity, the effect of obesity on mortality is lower in Black men because it is “crowded out” by other risk factors, from high rates of cigarette smoking to challenging socioeconomic conditions. There were insufficient data to make estimates for Asians, Hispanics, and other groups due to the highly stratified nature of the methodology.
In sum, by using a new, more rigorous approach, the new research shows that obesity is far more consequential than previously recognized, that the impact of the epidemic is only beginning to be felt, and that some population groups are affected much more powerfully than others.

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