Vitamin E 'may be bad for bones'
Published: 5th Mar 2012 07:36:11
Vitamin E supplements may interfere with the process that keeps bones healthy, suggest Japanese scientists.
Writing the journal Nature Medicine, the Keio University team said mice given large doses had lower bone mass - if the same was true in humans, fracture-risk would be reduced.
Vitamin E is found in oils, green vegetables such as spinach and broccoli and in almonds and hazelnuts.
But a UK expert said supplements could be problematic.
The relationship between nutrients such as vitamin D and bone health are well established, but there is far less research which looks at the role of vitamin E.
The research at Keio University in Tokyo looked at what happened when mice had not enough vitamin E, and what happened when they were given supplements.
There is increasing evidence that taking supplements doesn't do any good, and if anything, may be doing harm”
Although some early studies suggested that consumption of the vitamin had a positive effect on bone mass, the Japanese team found the reverse was true, with bone health improving in the deficient mice, and losing bone mass when given supplements.
The size and density of bones in the body is not fixed in adulthood, but dependent on a balance between cells which lay down new bone, called osteoblasts, and cells which strip it away, called osteoclasts.
The researchers suggested that vitamin E could encourage the formation of osteoclast cells, which meant more bone was lost than would be laid down.
Similar experiments in rats, including work published in 2010, found the opposite results to the latest study, even suggesting that vitamin E could be useful as a bone-growth promoting treatment for older people.
But Dr Helen Macdonald, who researches the influence of nutrition on bone health at Aberdeen University, said that there were a small number of studies, including her own, which found negative effects.
She stressed there was no reason for people to change their diet to avoid the relatively small amounts of vitamin E contained in it.
She said: "However, vitamin E supplements involve doses far higher than those in a normal diet.
"There is increasing evidence that taking supplements doesn't do any good, and if anything, may be doing harm."
At 17:05:48 in SportLeicester City manager Nigel Pearson insists he is not worried about his unresolved contract situation.
At 16:55:25 in SportHead coach Garry Monk says he will not consider his own future until Swansea City secure Premier League survival.
At 16:52:24 in EnglandA father whose son's life "ended abruptly" at Hillsborough had his dreams cut short through the "failures of others", an inquest was told.
At 16:52:17 in SportFormer Liverpool midfielder Jay Spearing believes the entire city would be lifted if the Reds end their 24-year wait to win the league title.
At 16:51:11 in BusinessThe US Food and Drug Administration (FDA) wants minimum age restrictions and health warnings on e-cigarettes.
At 16:48:47 in HeadlinesJust two months ago the message on Syria was very simple.
At 16:44:30 in Northern IrelandA nurse in the Republic of Ireland who admitted taping a patient's mouth to keep him quiet has been given the Probation Act.
At 16:44:14 in ScotlandScottish retailer Scotmid has warned it does not anticipate "a meaningful retail upturn" this year after reporting a slump in operating profits.
At 16:38:29 in ScotlandPolice have appealed for witnesses after a man was assaulted in the Cowgate area of Edinburgh on Easter Monday.
At 16:37:22 in WalesA boy accused of raping a fellow pupil at a north Wales primary school has told a jury the alleged attack never happened.
Harvard CitationBBC News, 2012. Vitamin E 'may be bad for bones' [Online] (Updated 5th Mar 2012)
Available at: http://www.ukwirednews.com/news/1415612/Vitamin-E-may-be-bad-for-bones [Accessed 24th Apr 2014]
News In Other Categories
The number of older people in England needing care will "outstrip" the number of family members able to provide it by 2017, a think tank has warned.
With the doors to its brand new £1million training centre officially open, one of the UK's leading apprentice training providers, Bristol based S&B Automotive Academy, is showcasing its world-class facilities by launching a series of foreign student exchanges for the first time in its 41-year history. To get a flavour of what life is like as an apprentice in the UK, the Academy hosted 16 apprentice engineers and bus drivers from the G9 Automotive College in Hamburg, Germany, as part of a Europe-wide vocational training initiative called the ‘Leonardo Programme’ with support from the European Social Fund. In a reciprocal arrangement, S&B will be sending nine apprentices to Germany during February 2012 so that they can get an appreciation of life in the automotive industry on the Continent. A further three German exchange groups are being planned for next year. Designed to assist the development of vocational skills and training across Europe, including work placements for trainees, the Leonardo Programme has a budget of €1.75bn, which is helping to encourage UK organisations to work with their counterparts abroad. In what is expected to be another challenging year for employers in the UK automotive sector, S&B’s Chief Executive, Jon Winter, claims that the exchange initiative will bring many benefits to the Academy and its apprentices: “In a world of global automotive brands, it’s important for our learners to understand the international context of the industry they have chosen to make their career. This new exchange programme will enable apprentices and Academy staff alike to achieve a better understanding of the challenges and opportunities within the automotive arena in Europe. With the Academy’s influence also extending to the USA and Asia, there’s every possibility that this initiative could move further afield in the future.” Continued Winter: “The need for skilled technicians across the world is on the increase and we actively encourage our apprentices to look at broader horizons during their training. Many of them have already learned the phrase ‘Vorsprung durch Gelehrtheit’, quite simply, ‘Advancement through learning.” In the 2010/11 academic year, S&B doubled the number of successful Apprenticeships over the previous year with some 350 apprentices graduating from the Academy. At the same time, achievement levels reached an all-time high with an overall success rate of 85%. For those learners on the Advanced Apprenticeship three-year programme, success rates were even higher, at over 98%. PHOTO CAPTION: As part of their exchange visit, S&B Automotive Academy arranged for the German apprentices to visit Hampshire bus operator, Bluestar, at its Barton Park depot. The students are pictured with S&B’s Andy West (3rd right) and Steve Prewett, Bluestar’s Area Engineering Manager (2nd right). Ends http://www.sandbaa.com
The leader of an internet gang which stole £1.25m from banks has been jailed for five-and-a-half years.
A nurse in the Republic of Ireland who admitted taping a patient's mouth to keep him quiet has been given the Probation Act.
The Archbishop of Canterbury has said David Cameron is "right" to state that the UK is a "Christian country".
An orchestral work by the Pet Shop Boys about the life of wartime codebreaker Alan Turing is to have its world premiere at this year's BBC Proms.