Omega-3 fatty acids shown to prevent or slow progression of osteoarthritis

According to the University of Bristol study, funded by Arthritis Research UK and published in the journal Osteoarthritis and Cartilage, omega-3-rich diets fed to guinea pigs, which naturally develop osteoarthritis, reduced disease by 50 per cent compared to a standard diet.

The research is a major step forward in showing that omega-3 fatty acids, either sourced from fish oil or flax oil, may help to slow down the progression of osteoarthritis, or even prevent it occurring, confirming anecdotal reports and “old wives' tales” about the benefits of fish oil for joint health.

Lead researcher Dr John Tarlton, from the Matrix Biology Research group at the University of Bristol's School of Veterinary Sciences, said classic early signs of the condition, such as the degradation of collagen in cartilage and the loss of molecules that give it shock-absorbing properties, were both reduced with omega-3.

“Furthermore, there was strong evidence that omega-3 influences the biochemistry of the disease, and therefore not only helps prevent disease, but also slows its progression, potentially controlling established osteoarthritis,” he said.

Dr Tarlton added: “The only way of being certain that the effects of omega-3 are as applicable to humans as demonstrated in guinea pigs is to apply omega-3 to humans. However, osteoarthritis in guinea pigs is perhaps the most appropriate model for spontaneous, naturally occurring osteoarthritis, and all of the evidence supports the use of omega-3 in human disease.”

Medical research director of Arthritis Research UK, Professor Alan Silman, said: “The possibility that omega-3 fatty acids could prevent osteoarthritis from developing has been a tantalising one. Some limited, previous research in dogs has suggested that we were a long way away from understanding the potential use in humans. However, this current research in guinea pigs is exciting as it brings us closer to understanding how omega-3 might fundamentally interfere with the osteoarthritis process, and that it could potentially be taken as a treatment.”

On the back of the results of his study, Dr Tarlton said that following government guidelines on dietary intake of omega-3 fatty acids could be effective in reducing the burden of osteoarthritis. Fish oil is far more effective than the flax oil based supplement, but for vegetarians flax oil remains a viable alternative.

“Most diets in the developed world are lacking in omega-3, with modern diets having up to 30 times too much omega-6 and too little omega-3. Taking omega-3 will help redress this imbalance and may positively contribute to a range of other health problems such as heart disease and colitis.”

Further studies are needed to determine the influence of omega-3 fatty acids on established disease in guinea pigs, and to confirm the effects in human osteoarthritis, said Dr Tarlton.

Osteoarthritis affects around eight million people in the UK, and is caused when the cartilage at the ends of bones wears away and the underlying bone thickens, leading to stiff, painful joints. Currently, there is no effective treatment to slow down disease progression, and treatment is limited to pain relief and ultimately joint replacement.

Paper: Regulation of osteoarthritis by omega-3 (n-3) polyunsaturated fatty acids in a naturally occurring model of disease, L. Knott, N.C. Avery, A.P. Hollander, J.F. Tarlton. Osteoarthritis and Cartilage, Volume 19, Issue 9, September 2011.

Media Contact

Joanne Fryer EurekAlert!

Further information:

http://www.bristol.ac.uk

All news from this category: Health and Medicine

This subject area encompasses research and studies in the field of human medicine.

Among the wide-ranging list of topics covered here are anesthesiology, anatomy, surgery, human genetics, hygiene and environmental medicine, internal medicine, neurology, pharmacology, physiology, urology and dental medicine.

Back to the Homepage

Comments (0)

Write comment

Latest posts

Chemists create renewable plant-based polymers

What makes them different is that they can be easily recycled. Researchers at the Laboratory of Cluster Catalysis at St Petersburg University have synthesised polymers from biomass. What makes them…

Atom interferometry demonstrated in space for the first time

Researchers present results of experiments with atom interferometry on a sounding rocket / Further rocket missions set to follow. Extremely precise measurements are possible using atom interferometers that employ the…

Ocean bacteria release carbon into the atmosphere

Research could help scientists better estimate Earth’s carbon budget. A team led by University of Minnesota researchers has discovered that deep-sea bacteria dissolve carbon-containing rocks, releasing excess carbon into the…

Partners & Sponsors