Auckland: Research from the University of Auckland shows eating flavonoids –
found in green tea, apples, blueberries, cocoa, red wine and onions –
can significantly reduce the risk of catching colds and coughs. The research shows adults are 33 percent more protected from the common cold
(upper respiratory tract infections - URTI), if they eat flavonoids or
take flavonoid supplements, compared with those who do not. Nutrition researcher Dr Andrea Braakhuis says people who eat flavonoids also have fewer sick days.
“These findings show that if you’re generally healthy, eating
flavonoids found in lots of fruits and vegetables, can help stave off
the bugs over winter,” says Dr Braakhuis.
She says most adults have two to three colds a year and children can
have up to five, with symptoms including a sore throat, cough, runny
nose and headache.
“We’d all love to make it through winter without one of these nasty
colds. They’re a leading cause of visits to a doctor, yet antibiotics
don’t help, so it’s worth giving flavonoids a go as part of a healthy
diet,” says Dr Braakhuis.
Dr Braakhuis says nutrition scientists are learning more about the
special components in foods, like flavonoids, which are thought to have
anti-viral, anti-inflammatory and antioxidant properties, so can help
reduce the incidence of coughs and colds and boost immune function.
At this stage, she says it’s too soon to recommend whether foods or
supplements are a better source of flavonoids, and what the ideal dose
is.
“Eating five serves of vegetables and two of fruit each day, in a
variety of colours, will put you well on the path to getting enough
flavonoids. Make sure your dinner plate is at least half full of
vegetables, sip green tea over winter and enjoy the occasional red
wine,” says Dr Braakhuis.