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In
the news
...
Mediterranean
diet linked to longer life
The Mediterranean diet has been consistently linked with
health benefits, including reduced mortality and reduced
risk of chronic diseases, such as heart disease.
It is characterised by a high intake of vegetables,
fruits, nuts, legumes (such as peas, beans and lentils),
and (mainly unrefined) grains; a high intake of olive
oil but a low intake of saturated fats; a low intake of
dairy
products, etc.
Telomeres sit on the end of chromosomes (like the plastic
tips on the end of shoelaces), stopping them from fraying
and scrambling the genetic codes they contain. In healthy
people, telomeres shorten progressively throughout life,
more than halving in length from infancy to adulthood, and
halving again in the very elderly.
Shorter
telomeres are thus associated with
lower life expectancy and greater risk of
age-related diseases. Lifestyle
factors, such as obesity,
cigarette smoking, and consumption of sugar
sweetened drinks, have all been
linked to people having shorter telomeres than
typically occur in people of a similar age. Oxidative
stress and inflammation have also been shown to speed
up telomere shortening.
Given that
fruits, vegetables, and nuts - key components of the
Mediterranean diet - have well known antioxidant and
anti-inflammatory effects, a team of US researchers, led
by Immaculata De Vivo, Associate Professor at Brigham and
Women's Hospital and Harvard Medical School, set out to
examine whether adherence to the Mediterranean diet was
associated with longer telomere length.
"Our results further support the benefits of
adherence to the Mediterranean diet for promoting
health and
longevity."
BMJ-British
Medical Journal
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