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Home / New Zealand

Potential relief from some migraines

29 Mar, 2004 12:40 AM2 mins to read

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A Victoria University researcher believes a simple dietary supplement may give relief to some of the more than 450,000 New Zealanders who suffer migraine headaches, and may also help to prevent strokes.

Genetic epidemiologist Rod Lea and colleagues at Brisbane's Griffith University have discovered a gene linked to the most severe
and debilitating form of headache, migraine with aura.

About 12 per cent or 480,000 New Zealanders are estimated to suffer from migraine headaches with women more likely to be affected by the condition than men.

Of those affected, about a quarter suffer from the most debilitating form of the disease, migraine with aura, which is characterised by blurred vision and unusual sensations flashing across the head. This is often followed by nausea, vomiting and a fear of light and sound, and, of course, headaches.

Dr Lea, from the School of Biological Sciences, said migraines have long been suspected to have a genetic link because sufferers often had close relatives with the condition.

Blood samples were taken from 550 people, half of whom suffered from migraines. After analysing the DNA, the team discovered a mutation of a particular gene (Methylene tetrahydrofolate reductase) was far more common in those with the migraine with aura than those without.

"We decided to home in on this gene because it had been implicated in a higher risk for strokes by other researchers and it is known that people who suffer from migraines are at greater risk of having a stroke later in life," Dr Lea said.

"This mutation means migraine sufferers are likely to have higher levels of a particular amino acid or protein called homocysteine in the blood. But a diet rich in folate can reduce levels of homocysteine. "For many people folate-rich foods such as green vegetables or folate supplements could not only help ward off migraines but may also help prevent strokes."

Dr Lea says it is too early to say whether folate rich diets are the cure-all for people who suffer from migraine. But the appeal of this therapy is that it is not only simple and cheap, but may also help prevent migraine attacks in people for whom traditional drugs are not effective.

The results of the study have been published in a leading international medical journal. The team hoped to organise clinical trials to assess how effective folate can be in reducing migraine symptoms.

- NZPA

Herald Feature: Health

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