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Source: University of Otago

Thursday 11 October 2018 12:07pm

Dr Tanya Major.

Dietary factors have a far smaller influence on urate levels (a precursor to gout) than previously envisaged, new University of Otago research reveals.

The research, led by Post-Doctoral Fellow Dr Tanya Major, found that a healthy diet can be linked to having lower levels of serum urate, which protects from gout. But the amount of influence diet has on urate levels is very low overall.

Historically, diet has been linked to gout because certain foods can trigger gout flares and diet is often used as a disease management tool for gout patients. Many studies have looked at specific foods and their relationship with gout or serum urate, but this study published in The BMJ today went a step further by assessing how much variation in serum urate each food was responsible for.

Importantly, the study found no single food explained more than 1 per cent of variation in serum urate levels and when all foods in combination were considered, less than half a per cent of the urate variation was explained.

In contrast, genetic variants explained substantially more of the variation in serum urate among the participants involved in the research.

“It came as no surprise to us that genetic factors have a larger influence on serum urate than dietary factors, but what did surprise us was the magnitude of this difference; an almost 100-fold increase,” Dr Major explains.

The research shows that diet has very little influence on urate levels, she says.

“This is contrary to popular medical opinion and the common perceptions of the general public. We hope it will encourage medical practitioners to focus on other ways to manage urate levels and prevent gout flares, such as allopurinol use, rather than focusing on dietary modifications which are likely to be of little help to the patient.”

However, Dr Major urges some caution around the results as the study was conducted in a healthy population.

“This is the first-step of our project. The research now needs to be carried out among people with gout. We cannot say for certain that there won’t be a greater influence from diet in the urate levels of those people,” she explains.

“However, for diet to explain so little of such an essential component in the cause of gout is an important finding.”

Other researchers involved in the study were Assistant Research Fellow Ruth Topless and Professor Tony Merriman from the Department of Biochemistry together with Professor Nicola Dalbeth, from the University of Auckland.

It was funded by the Health Research Council of New Zealand and the University of Otago.

Paper link: http://www.bmj.com/content/363/bmj.k3951

For further information, please contact:

Dr Tanya Major
Post-Doctoral Fellow
Tel +64 3 479 7846
Mob +64 21 0265 0684
Email tanya.major@otago.ac.nz

Liane Topham-Kindley
Senior Communications Adviser
Tel +64 3 479 9065
Mob +64 21 279 9065
Email liane.topham-kindley@otago.ac.nz

Electronic addresses (including email accounts, instant messaging services, or telephone accounts) published on this page are for the sole purpose of contact with the individuals concerned, in their capacity as officers, employees or students of the University of Otago, or their respective organisation. Publication of any such electronic address is not to be taken as consent to receive unsolicited commercial electronic messages by the address holder.

MIL OSI

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