Obesity Can Reduce Age up to 3 Years

Scientists say people who are overweight at risk of decline in life expectancy by 1 year, even the life expectancy of obese people can be reduced to 3 years.

Being overweight is considered very related to health complications including heart disease, stroke and cancer, and previous studies have found that obesity can take a few years of your age.

Being overweight is now the number two cause of premature death after smoking in North America and Europe.

When the smoke accounts for a quarter of total premature death, obesity accounts for 14 to 20 percent of these deaths.

Researchers refine the data of nearly 4 million non-smoking adults in 32 countries published from 1970 to 2015.

They compared the risk of death in some level of body mass index or BMI and body fat measures were calculated using height and weight.

They define a BMI of 18.5 to 25 as normal weight, 25-30 as overweight, 30-35 as overweight, and 40 to the top as extremely obese.

Overweight people at risk of losing one year of life expectancy than people with normal weight, while people who are obese and very obese can lose three years of life expectancy, says Richard Peto of Oxford University, one of the authors of the study.

Previous research even found that being very overweight can cut life expectancy by 8 years.

The study also found that being obese is much more harmful to men than women. "Men who are overweight 3 times more at risk of early death than women," said Peto.

According to the World Health Organization, 15 percent of women worldwide and 11 percent of men are overweight. Overall, WHO estimates that more than 1 billion adults are overweight and 600 million are obese.

Peto admits that it takes a step further than just advise people to lose weight, because weight loss in overweight people extremely difficult. He continued, "It may be easier to recommend people to not gain weight, especially when they enter the age of 30," he said.