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Sticking to dietary recommendations would save 33,000 lives a year in the UK

www.eurekalert.org

15 December 2010

Sticking to dietary recommendations would save 33,000
lives a year in the UK
Modelling the impact of a healthy diet on cardiovascular disease and cancer
mortality
If everyone in the UK ate their "five a day," and cut their dietary salt and unhealthy fat
intake to recommended levels, 33,000 deaths could be prevented or delayed every year,
reveals research published online in the Journal of Epidemiology and Community Health.
Eating five portions of fruit and vegetables a day accounts for almost half of these saved
lives, the study shows. Recommended salt and fat intakes would need to be drastically
reduced to achieve similar health benefits, say the authors.
The researchers base their findings on national data for the years 2005 to 2007 for all four
UK countries.
Their data sources included deaths from coronary heart disease, stroke and cancers;
figures on food and nutrient consumption; and in-depth high quality analyses of published
evidence on the contribution of diet to serious illness and premature death.
They fed all this information into a conceptual framework (DIETRON model) in a bid to
calculate the number of lives that could be saved if UK dietary recommendations on the
consumption of fats, salt, fibre and fruits and vegetables were all met.
These stipulate the daily consumption of 440 g of fruits and vegetables; 18 g of fibre; a
third of total energy to be provided by fats, with saturated fat comprising 10% of this; and
a maximum 6 g of salt.
In 2007, none of the UK countries met any of these recommendations, with Scotland and
Northern Ireland the furthest away from achieving them.
Their calculations showed that the recommendation for fruit and vegetables - "five a day" -
made the largest contribution, staving off more than 7,000 deaths a year from coronary
heart disease and almost 5,000 from cancer, adding up to more than 15,000 preventable
deaths a year.
But nearly 4,000 annual deaths could be prevented by sticking to the recommendations on
dietary fibre, while those on fats and salt would save almost 7,000 and 7,500 respectively.
When taken together, the figures add up to 33,000 lives a year, say the authors. Men and
those living in Northern Ireland have the most to gain, the figures indicate.
While boosting fruit and vegetable consumption would have the most positive effect on
health outcomes, there is scope for more to be achieved by lowering recommended levels
of salt and fat consumption, say the authors.
"In order to achieve a reduction in mortalities similar to those attained by achieving the
fruit and vegetables recommendation, the salt recommendation should be set at 3.5 g per
day," they say.
"To achieve a similar reduction in cardiovascular mortalities, the saturated fat
recommendation should be set at 3% of total energy," they add.