More fruits and veggies don’t help lung disease
NEW YORK (Reuters Health) Adding extra daily servings of fruits canada goose coats on sale and vegetables didn improve lung function or other markers of lung canada goose store health in people with chronic obstructive pulmonary disease (COPD) in a new study from Northern canada goose clearance Ireland.
A fruit seller adjusts a price tag in a market in downtown Rome November 14, 2011.
Previous research has shown that people cheap Canada Goose who eat lots of fruits and veggies may have less severe lung symptoms, or be less likely to canada goose uk shop die from COPD possibly canada goose uk outlet because of the antioxidants in that food group and its Canada Goose Online anti inflammatory effects, the theory goes.
But those studies were observational, meaning that scientists compared people who were already downing fruits and vegetables to those who Canada Goose Coats On Sale avoided them. That kind of Canada Goose uk research doesn prove Canada Goose Jackets that nutritional habits, themselves, are driving lung changes, because scientists can take into account every other health and lifestyle variable that affects breathing and Canada Goose sale airway uk canada goose function.
can control for everything that might confound or bias the uk canada goose outlet results, said Dr. Don Sin, a respiratory specialist at the University of British Columbia in Vancouver who wasn involved in canada goose clearance sale the new research.
taking a lot of antioxidants may also exercise a lot more than people who don eat a lot of fruits and vegetables. Maybe they smoke less, maybe they are more compliant Canada Goose Outlet with Canada Goose online their medications, and the list goes on, he told Reuters Health.
For the new study, researchers tried to get around that hurdle by recruiting 75 people with COPD who all skimped on fruits and veggies and randomly assigned half of them to up their consumption from less than two servings per day to at least five. The rest of the patients were instructed not to eat more than two daily portions.
Participants in both groups had fruits and vegetables delivered to their home each week for Canada Goose Parka 12 weeks, and were also advised on storing and cooking them.
On buy canada goose jacket cheap average, people assigned to a diet high in fruit and vegetables increased buy canada goose jacket their consumption to more than six servings per day, compared to just under canada goose factory sale two in the group not prescribed diet changes.
That improvement was impressive on its own, researchers said, but it didn lead to any improvement in lung function or measures of inflammation in the airway.
Thirty five patients saw canada goose their COPD worsen during the study, including six who needed to be hospitalized. People in both diet groups were equally likely to have worsening symptoms, according to findings published in the European Respiratory Journal.
Michelle McKinley from Queen University Belfast and her colleagues said it canada goose uk black friday possible that a fruit and vegetable boost that lasted longer than just a few canadagoosetomall months would lead to improvements in lung function or that a broader dietary change might be canadian goose jacket necessary.
Another explanation for the lack of airway benefit is that patients disease might cheap canada goose uk have been too far along for diet changes to make a canada goose coats difference, said Irfan Rahman, who studies COPD at the University of Rochester Medical Center in New York and wasn involved in the research.
All patients in McKinley study had moderate or severe lung disease and were in their early 60s, on average.
He canada goose black friday sale added that younger people who have smoked but don have emphysema or chronic bronchitis should up the amount of fruits and vegetables in their diet especially green, leafy vegetables. They can also work out their lungs by getting aerobic exercise, such as brisk walking.