Just ONE hour of jogging or swimming a week is
'more effective in fighting obesity than counting calories'It’s long been thought that the key to
fighting obesity lies in limiting caloric intake.
Yet, for some obese people who count their calories,
shedding the pounds proves an impossible goal to reach.
Scientists have discovered the answer lies in the fact
obesity can stem from inherited genes.
And, their new findings reveal the best way to blunt the
effects of those genes is to exercise.
A physically active lifestyle has been found to
substantially decrease the genetic effects of major obesity genes, a new study
from McMaster University revealed.
Just one hour a week of jogging or swimming for obese people
is more beneficial than diets or reducing portion sizes, scientists found.
The study said: ‘These data challenge the idea of
attributing the obesity epidemic mainly to excessive caloric intake and support
the universal value of [physical activity] to maintain a healthy body weight.’
The team of scientists looked at data from nearly 17,400
people from six ethnic groups: South Asian, East Asian, European, African,
Latin American and Native North American.
The study participants were recruited from 17 countries and
researchers followed them for more than three years.
The scientists analysed the impact of 14 obesity
predisposing genes.
They determined that physical activity can blunt the genetic
effect of FTO – a major contributor to obesity – by up to 75 per cent.
Previous studies have found physical activity converts ‘bad’
white fat into ‘good’ brown fats, known as adipose tissue.
The current study found that the combined role of FTO and
physical activity in obesity and adipocyte browning strengthened those previous
results.
The study said: ‘Given the growing consensus that food
intake may be the main driver of the obesity epidemic, it is important to note
that both PA measures displayed significant associations with both adiposity
measures at baseline and at follow-up.’
As a result, the scientists determined that physical
activity can influence obesity, despite the broad range of lifestyles of the
study participants.
The analysis found that physical activity has a larger
impact on BMI and waist circumference trends than caloric intake.
Dr David Meyre, an associate professor of epidemiology and
biostatistics, said: ‘This provides a message of hope for people with obesity
predisposing genes that they can do something about it.
‘Our body weight destiny is not only written in our genetic
blueprint.’
He added: ‘These promising results encourage us to
investigate how additional lifestyle factors, such as diet, stress and sleep
patterns, may impact the genetic predisposition to obesity.’
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ReplyDeletethe truth is if you are over weight jogging and skipping is not enough you have to on a health diet with lots of fruits and veggie. way back i was very fat but today am trim and health. so i dont buy what the scientist up in the western world say.what works for u might not work for me.
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