New research into optimising our levels of vitamin C

March 4, 2013

(Medical Xpress)—A daily vitamin C intake equivalent to eating two kiwifruit a day is required to ensure our muscles maintain optimal levels, researchers from the University of Otago, Christchurch have found.

Professor Margreet Vissers and her team from the Centre for Free Radical Research are involved in a large on-going study to better understand the critical role of vitamin C in the . They are also investigating the best way to obtain the vitamin from the diet.

Their paper on the uptake of vitamin C into muscle has just been published in the , the most prestigious publication in the field of .

The study has shown that is very sensitive to changes in vitamin C intake and that the vitamin C content in muscle will fall if intake decreases below optimal levels. This is likely to affect . Muscle is the largest store of vitamin C in our bodies.

Professor Vissers and her team gave 54 males aged between 18 and 35 either half a kiwifruit or two kiwifruit a day over a six week period. They then measured the vitamin C content in muscle and elsewhere in the body.

The researchers found that general were increased with the 'two per day' kiwifruit dose, and this is likely to reflect the optimal muscle function under these conditions.

She says eating high-value vitamin C foods, like kiwifruit, is the ideal way to maintain healthy levels.

 "Many people think that all fruit and vegetables are equally able to supply vitamin C, but this is not the case. The levels in food vary hugely across the spectrum. We should eat a good range daily, but because many fruit contain only one tenth of a healthy daily vitamin C requirement, we would recommend at least one serve per day of a high-value food like kiwifruit. This will help you easily reach an optimal vitamin C intake, as well as delivering other vital nutrients.''

Explore further: Better to eat kiwifruit than to take vitamin C supplements

Related Stories

Better to eat kiwifruit than to take vitamin C supplements

May 27, 2011
(Medical Xpress) -- University of Otago, Christchurch, researchers have found that a natural fruit source of vitamin C – kiwifruit – is vastly superior to a purified supplement form.

Gold kiwifruit each day reduce cold symptoms

January 4, 2012
(Medical Xpress) -- Adding gold kiwifruit to your diet may lead to less suffering from symptoms of common illnesses such as colds, research suggests.

Health benefits of vitamin D dependent on type taken

May 31, 2012
New research has shown that vitamin D3 supplements could provide more benefit than the close relative vitamin D2. The findings published in the June edition of the American Journal of Clinical Nutrition could potentially ...

Recommended for you

Brain disease seen in most football players in large report

July 25, 2017
Research on 202 former football players found evidence of a brain disease linked to repeated head blows in nearly all of them, from athletes in the National Football League, college and even high school.

Safety of medical devices not often evaluated by sex, age, or race

July 25, 2017
Researchers at Yale and the University of California-San Francisco have found that few medical devices are analyzed to consider the influence of their users' sex, age, or race on safety and effectiveness.

Why you should consider more than looks when choosing a fitness tracker

July 25, 2017
A UNSW study of five popular physical activity monitors, including Fitbit and Jawbone models, has found their accuracy differs with the speed of activity, and where they are worn.

Dog walking could be key to ensuring activity in later life

July 24, 2017
A new study has shown that regularly walking a dog boosts levels of physical activity in older people, especially during the winter.

Alcohol to claim 63,000 lives over next five years, experts warn

July 24, 2017
Alcohol consumption will cause 63,000 deaths in England over the next five years – the equivalent of 35 deaths a day – according to a new report from the University of Sheffield Alcohol Research Group.

Alcohol boosts recall of earlier learning

July 24, 2017
Drinking alcohol improves memory for information learned before the drinking episode began, new research suggests.

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.