Sitting at your desk for six hours a day dramatically increases the risk of cancer and diabetes
People who spend more than six hours sitting each day are at higher risk of cancer, heart disease and diabetesOffice workers and drivers in particular danger of suffering from poor health
14:50 GMT, 20 February 2013
14:56 GMT, 20 February 2013
Men who spend more than six hours sitting each day are at higher risk of cancer, heart disease and diabetes, researchers have warned.
The negative effect of being sedentary is so profound that it holds true regardless of age, income, education and even weight.
sat more reported a higher incidence of disease even if they
had a similar body mass index compared with those who sat less.
Glued to the desk: Men who sat for more than six hours a day significantly increase their risk of cancer and diabetes
The research, carried out by Kansas State University, found a direct link between the amount of time people spend sitting and the likelihood of developing chronic conditions including cancer, heart disease and diabetes.
The study, published in the
International Journal of Behavioral Nutrition and Physical Activity,
followed 63,048 men aged 45 to 65, recording how long they sat each day
as well as any ill health they experienced.
sitting time was categorised as being less than four hours, four to six
hours, six to eight hours, or more than eight hours.
results showed that those who sat less than four hours per day were
significantly less likely to suffer with chronic disease. Those sitting
for at least six hours were significantly more likely to develop
Even being physically active may not undo the damage of sitting for long periods
The findings are thought to be
particularly relevant to those working in desk-based jobs as well as
those who spend long periods of time driving.
Richard Rosenkranz, assistant professor of human nutrition who led the study, said: 'We saw a steady increase in risk of chronic diseases the
more participants sat. The group sitting more than
eight hours clearly had the highest risk.
'We know with very high confidence that more physically active
people do better with regard to chronic disease compared with less
physically active people, but we should also be looking at reducing
'A lot of office jobs that require long
periods of sitting may be hazardous to your health because of inactivity
and the low levels of energy expenditure.'
Despite the study focusing on men, researchers believe that
the same results would be observed in women.
The new research is part of the 45 and Up Study, the largest long-term study
of aging in Australia, involving more than 267,000 people.
Whilst researchers are confident that the evidence suggests inactivity is responsible for the increased risk of disease, they cannot be certain
that too much sitting led to the development of diseases or whether the chronic
diseases increased sitting time.
'It's a classic case of, “Which came first: The chicken or the egg”'
However, previous studies have observed
similar results suggesting that sitting has a negative impact on health.
A 2007 study published by the University of Missouri
found that sitting for prolonged periods of time was 'as bad for health
as smoking' and just last year an Australian study demonstrated that adults who sat 11 or more hours per
day had a 40 per cent increased risk of dying in the following three years
compared with those who sat for fewer than four hours a day.
For more information on how to get active visit the NHS Choices Live Well website.