Keep fit to beat dementia

Deaths from dementia have risen by 140 per cent in recent years. So keeping active is vital.

Dementia is a chronic or persistent disorder of the mental processes caused by brain disease or injury and marked by memory disorders, personality changes, and impaired reasoning.

Eat foods that aid brain health

Like the rest of the body, the brain operates at its best when fed a nutritious diet.

While a balanced diet is always advised, there are foods that enhance brain health.

Evidence has suggested a diet rich in antioxidants and omega-3s may play a significant role in reducing our risk of dementia.

Avoid trans-fats, which can be found in processed and packaged foods, and reduce consumption of saturated fats.

Be physically active and get regular medical checks

Several studies have found being active in early, mid and late life is good for cognition and brain health, suggesting it may reduce the risk of dementia.

Like the heart, the brain is highly vascular, so exercise is essential for maintaining adequate blood flow to the brain. Alzheimer's Australia recommends 30 minutes a day of moderate exercise.

If you are over 45, you should be tested for diabetes and high cholesterol every one to two years, or on your GP's advice.

Studies have shown high cholesterol in mid and late life can increase the risk of Alzheimer's, while having diabetes can increase the risk by 65 per cent.

"I fight my dementia with daily study, socialising and exercise"

Kate Swaffer, 54, was diagnosed with early-onset dementia at 49.

"I'd noticed I'd gone from having a photographic memory to becoming more forgetful. I'd also developed symptoms of dyslexia.

"When I was diagnosed with dementia, I decided to keep my brain active any way I could. I'm at university doing an honours degree, I write a blog about my experiences and I'm a dementia and aged care advocate. Every day I practise meditation. I used to run, which is meant to be good for dementia, but I now have arthritis so I walk.

"I believe all this, along with social engagement and the support of the people I love, means my brain is functioning at a much higher level than would be expected. It's not easy, but I believe in my brain's ability to heal itself."