By Dave Goosselink
New research into vitamins and supplements suggests you can have too much of a good thing.
The studies have highlighted the dangers of overdosing on vitamins, with claims that popping too many pills is more hazardous than second hand smoke.
International studies suggest healthy people who take too many vitamins increase their risk of premature death by 16 percent.
Professor Rod Jackson, Head of Epidemiology at Auckland University, believes the pills often do more harm than good.
“These harmful effects are at least as bad as passive smoking. We've regulated against passive smoking, it's time to regulate vitamins. In my opinion they should be prescription-only drugs,” he says.
Jackson conducted his own trial for a TV documentary, getting 8 self-confessed pill-popping volunteers to go cold turkey for six weeks.
Bridget Saunders ditched her regular supplements for the experiment, but found her body missed the daily dose of fish oil.
“I suffer really really badly from dry skin and dry hair, and my cuticles got so bad that they were like bloody, like ripped and bloody, like really really painful. So I'm back taking my fish oil,” she says.
Researchers admit supplements can be useful for people with genuine deficiencies, but say natural sources of vitamins are the best.
They claim overdosing on vitamins A and E by as little as 5 percent can lead to cancer and heart disease.
“Totally not against vitamins, I'm only against stuff which kills us,” says Professor Jackson.
3 News was unable to make contact with a spokesperson for the vitamin companies, which make up a $180 million a year industry here.
And not all of the volunteers are entirely convinced by the study.
“I don't know, I'm dubious about it, I really am. I'd like to see much more evidence than we've already seen,” says Ms Saunders.
But she is planning to cut back on her daily supplements, and will think twice before adding to her vitamin collection.
3 News