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UK News Don't buy into superfood - but eating right CAN reduce dementia risk

09:31  02 august  2020
09:31  02 august  2020 Source:   dailymail.co.uk

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reduce your risk of dementia : The Mediterranean diet helps keep you trim - and protects the brain (and no, you don ' t have to give up red meat or puddings). As a nutritionist, perhaps I’m more acutely aware than most of the often overblown claims made for ‘brain boosting’ foods and supplements.

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As a nutritionist, perhaps I’m more acutely aware than most of the often overblown claims made for ‘brain boosting’ foods and supplements. Take oily fish: fantastic, tasty, super-healthy, it almost goes without saying. But browse online and you’ll find no end of articles claiming that eating salmon, mackerel and sardines helps ‘support brain function’ amid other claims.

Sounds great. Problem is, there’s no good evidence for it. In fact, last year a study of more than 8,000 adults revealed that the amount of oily fish consumed throughout a person’s lifetime made no difference to their chances of developing dementia.

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EATING the right foods is crucial to keeping the brain healthy once you reach 50, experts Loading up on berries, vegetables, nuts, olive oil, fish and seafood is essential to keeping the mind firing into old age. While there is no “silver bullet” superfood to stave off the ravages of dementia the report says

Dementia affects over 800,000 people in the UK. It is not a disease in its own right and it is not a natural part of ageing. It describes a group of symptoms that are caused by many diseases that affect the brain for example, Alzheimer's disease.

Blueberries, dark chocolate and even coffee are also often cited without any real evidence. Don’t even get me started on goji berries.

The truth is, there’s no one magic nutritional bullet, or way to ‘eat to beat’ dementia. It’s just not that simple – and I only wish it were.

a table topped with different types of vegetables: Popular in countries such as Greece, Spain and Italy, the Mediterranean diet includes small amounts of non-fatty meat, poultry and fish, along with wholegrains and unsaturated fats © Provided by Daily Mail Popular in countries such as Greece, Spain and Italy, the Mediterranean diet includes small amounts of non-fatty meat, poultry and fish, along with wholegrains and unsaturated fats

Tech spots first sign of disease

Scientists are investigating whether Fitbits, phones and smart watches could soon be used to pick up subtle signs of dementia years before symptoms show.

It is currently diagnosed using memory tests and brain scans, but only once symptoms have appeared. Also, many trials of treatments fail because they are tested on people whose disease is too far advanced, after they have suffered significant damage to their brain. Experts hope by picking it up earlier, measures could be taken to prevent decline.

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“ Superfoods ” such as broccoli, salmon, eggs, Greek yogurt, beans, walnuts, oatmeal, olive oil Incorporate these nutrition-packed foods into your diet. When it comes to being healthy, we tend to think about the foods we shouldn' t be eating .

Hearing aids reduce this risk , suggesting UK rationing could have a major effect in years to come. Increases individual risk by 90 per cent, responsible for 8 per cent of all cases. Dementia is a global concern but it is most often seen in wealthier countries, where people are likely to live into very old age.

Researchers are now testing whether the gadgets could be used to analyse the owner’s behaviour, such as their sleep and speech patterns and walking gait, and that if certain things start to change in tiny ways the user could not possibly notice themselves it may be a sign they are at risk of developing dementia.

The landmark study, called Early Detection of Neurodegenerative Diseases (EDoN), will analyse these normally imperceptible changes – such as how quickly people type text messages and emails – among those who then go on to develop dementia.

Professor Carol Routledge, director of research at Alzheimer’s Research UK, who is spearheading the project, said: ‘The stage you want to detect these diseases is ten or even 20 years earlier than we do today, before it’s too late. If we could, with these new and emerging technologies, we could intervene with lifestyle advice, or therapeutic drugs.’

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Four in ten cases of dementia could be prevented or delayed by adopting a healthier lifestyle, a study revealsCredit: Getty - Contributor. It includes too much boozing, too little exercise, smoking, obesity and high blood pressure. Loneliness, pollution, head injury, hearing loss, depression, diabetes and poor

Superfood : Pumpkin. Written by Caitlin Covington on September 25, 2013. While there’s no such thing as too much pumpkin, eating a lot can actually give your skin a “pumpkin-like glow.” Don ’ t worry, though — turning into a pumpkin after midnight is still only for fairy tales.

Last week, a major study suggested a blood test could be used to spot Alzheimer’s, the most common type of dementia, years before symptoms start. The test looks for traces of tell-tale proteins in the blood that might indicate a person is at risk.

That’s not to say, however, that diet doesn’t play an integral role in brain health. As we’ve learned, metabolic diseases – such as heart disease and diabetes – are responsible for the lion’s share of dementia cases in the UK. It’s hardly surprising, then, that diets proven in multiple scientific studies to reduce the risk of such conditions, also benefit the brain.

We’re talking about the Mediterranean diet – long recognised to halt the development of heart disease, diabetes, high blood pressure and, also, dementia.

Popular in countries such as Greece, Spain and Italy, it includes small amounts of non-fatty meat, poultry and fish, along with wholegrains like brown rice and wholemeal bread and unsaturated fats like nuts and olive oil, and plenty of fruit and veg.

Studies have found the rates of dementia in participants who ate this way are up to 40 per cent lower than those who do not.

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Don ’ t forget to eat it with fruit for additional benefits. Believe it or not, chocolate is also an anti-aging superfood . Rich in flavanols, chocolate can help maintain blood vessels and The first step toward healthy aging is a nutritious diet, so make the right choices and eat foods that can help support your

Buy Men’s Shoes, And a Free Pair Goes to the Homeless. The researchers believe the reason for the reduced prevalence of MCI in mushroom eaters may be down to a specific Other compounds contained within mushrooms may also be advantageous for decreasing the risk of cognitive decline.

Interestingly, eating this way seems to have more impact on brain health than a traditional weight-loss diet. A ground-breaking study from 2013 – the Predimed study – found that overweight individuals prescribed a Mediterranean diet that included olive oil and nuts every day for six years were less likely to develop dementia than those on low-fat plans.

And Swedish research involving more than 2,000 healthy over-60s found that sticking to this type of diet was linked to a slower rate of cognitive decline and thinking skills.

Some scientists believe the healthy fats abundant in the Mediterranean diet, found in nuts, fish, olive oil and some meat, may reduce the inflammatory molecules in the brain that affect our ability to process information.

But the simple fact is that eating lots of veg, fruit, wholegrains and lean protein fills you up, helping portion control and reducing the risk of obesity, which is one of the biggest risk factors for poor heart health, diabetes and, therefore, dementia.

High blood pressure is another leading trigger of dementia – it damages the tiny blood vessels that provide oxygen to the brain.

One in four Britons suffer from it and according to Government figures, 80 per cent of cases are caused by lifestyle habits, including diet.

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Most Britons know the link between salt intake and high blood pressure, yet we still eat on average, half a teaspoon more than our recommended daily limit. Too much salt in the bloodstream can lead to a build-up of excess fluid, increasing strain on blood vessels which leads to rising blood pressure.

a bowl of food: Some scientists believe the healthy fats abundant in the Mediterranean diet, found in nuts, fish, olive oil and some meat, may reduce the inflammatory molecules in the brain (file photo) © Provided by Daily Mail Some scientists believe the healthy fats abundant in the Mediterranean diet, found in nuts, fish, olive oil and some meat, may reduce the inflammatory molecules in the brain (file photo)

So, what IS the truth about oily fish?

It's true that diets high in oily fish, such as tuna, salmon and mackerel, are associated with a reduced risk of a host of diseases, including heart disease, type 2 diabetes and – up to a point – dementia.

Indeed, the NHS recommends that we all eat at least one portion of oily fish a week.

But is it really ‘brain food’, as its vocal supporters claim?

A type of fat called omega-3, which is abundant in the cells of oily fish but which is also produced by our bodies, help our brain cells to communicate and protects them from damage.

Omega-3 has long been proven to be important for cognitive development and memory in adults. But the evidence showing that regularly eating oily fish prevents dementia remains weak.

Some research has shown that people who eat lots of oily fish are less likely to get dementia, but other studies show the opposite.

And research has not yet been able to show that eating more oily fish increases the amount of omega-3 in the brain enough to boost cognition.

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Experts believe the association between diets that are high in oily fish and reduced dementia risk may instead be due to the fact that those who eat fish-heavy diets are generally healthier.

As for taking regular omega-3 supplements, large-scale reviews have shown that the benefits are minimal, not just for dementia but also for the prevention of cancer and heart disease.

While most excess salt can be easily avoided by reducing intake of packaged pizzas and smoked meats, some Mediterranean-style foods may counter the effect of salt, too.

Vegetables that are high in potassium, such as sweet potatoes, peas and broccoli, can help to restore the fluid balance in the bloodstream, keeping blood pressure stable.

Now researchers are studying an eating plan that combines a Mediterranean and a blood-pressure reducing diet – low in salt, red meat and sugar – designed especially to target brain health.

Studies have shown the plan – Mediterranean-Intervention for Neurodegenerative Delay diet, or MIND diet, for short – reduced the risk of developing the most common form of dementia, Alzheimer’s disease, and slowed cognitive decline. The American scientists identified a list of 15 of the most crucial dietary habits to adopt, which are detailed in the panel on the right. Those who ate plenty of leafy green vegetables and some types of berries had particularly low risk.

Another healthy habit, surprisingly, is drinking alcohol – but not too much of it. The US scientists found that a small glass of wine most nights was harmless and may even be beneficial.

It’s not fully understood why this is, but some studies suggest that a small quantity can prevent stickiness in the blood that supplies the brain, while red wine contains antioxidants linked to brain health.

And what about carbohydrates, which are often given a bad rap?

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It’s true, high blood sugar levels – as seen in those with type 2 diabetes – are linked strongly to dementia. But problems may start earlier than once thought, with even slightly raised blood sugar – not yet in the diabetic range and dubbed prediabetes – being linked to increased heart and brain disease risk.

But despite popular beliefs, it isn’t necessary to drastically cut carbohydrates to achieve a healthy blood sugar level. In fact, it could be a bad idea. ‘It’s wrong to focus solely on carbs as the culprit, when regular exercise and weight loss actually have a bigger impact in the long term,’ explains Dr Lisa Gatenby, a registered nutritionist specialising in brain injuries.

Although low-carb diets do lead to weight loss in the short term, in the long term they’re no better than other diets, such as low-fat or low-calorie plans.

‘Cutting out foods such as wholewheat bread and pasta and oats could be detrimental to brain health, as wholegrains are recommended as part of both a heart health and inflammation-dampening diet that is also dementia-friendly,’ adds Dr Gatenby.

Not only does fibre reduce the risk of bowel cancer, by helping digested food move through and out of the body, it has also been proven to help prevent fatty deposits building up in the arteries that carry blood from the heart to the rest of the body. It also keeps blood pressure steady, which provides a better supply of oxygen and nutrients to the brain.

a piece of cake sitting on top of a wooden cutting board: Wholegrains like brown rice and wholemeal bread are included in the Mediterranean diet. Another healthy habit, surprisingly, is drinking alcohol ¿ but not too much of it (file photo) © Provided by Daily Mail Wholegrains like brown rice and wholemeal bread are included in the Mediterranean diet. Another healthy habit, surprisingly, is drinking alcohol ¿ but not too much of it (file photo)

What's the difference... between Alzheimer’s disease and frontal variant Alzheimer’s disease?

The key difference between the two forms lies with the parts of the brain affected in early stages.

In frontal variant Alzheimer’s disease, which affects roughly one in 50 sufferers, the frontal lobes – responsible for personality and habitual tasks – are damaged, so the patient may act aggressively or inappropriately, and may struggle with simple tasks such as making a cup of tea. Memory loss appears far later.

In Alzheimer’s disease, which accounts for the majority of cases, the frontal lobes are affected late on, and the first symptoms are memory loss.

It is, however, sensible to keep an eye on sugar intake, says Dr Gatenby. ‘Public Health England recommends keeping your intake of “free” sugars – added sugars and those found in syrups, honey and fruit juice – to 30g, or about seven teaspoons a day, but there’s no evidence that cutting out sugar completely has specific dementia protective properties. It’s the overall balance of your diet that matters and variety is key to health, so the odd sweet treat isn’t going to hurt.’

So now you know the crucial elements of a brain-boosting diet, but how do you put it into practice?

Thankfully, we’ve done the hard work for you, by creating a tempting selection of simple recipes – all perfect examples of the science-backed principles listed above.

On the following seven pages you’ll find hearty breakfasts – both sweet and savoury – tasty lunches packed with vegetables and delicious, heart-friendly suppers, prepared in a flash. There are puddings, of course, and even indulgent ice cream – at a far lower calorie cost than your favourite shop-bought brand. Each meal has been crafted using my expert nutritional know-how, and is designed to keep your brain in the best shape for as long as possible.

Try to use them as a model, using roughly the same quantity of all the main food groups, for most of your main meals.

And while this isn’t a weight-loss diet, all of these recipes stick to a moderate calorie count designed to prevent you from piling on the pounds, and leaving room for the odd treat.

So not only will these dishes help you ward off the UK’s biggest killer, but they may help you shift at least some of that lockdown weight, too.

Are you getting your daily dose of brain food?

US scientists have identified 15 dietary habits as crucial for reducing dementia risk. How many do you stick to? For every ‘yes’ answer, give yourself one point.

DO YOU EAT….

a glass of wine: Do you drink one glass of wine or other alcohol (or a glass of purple grape juice) a day? © Provided by Daily Mail Do you drink one glass of wine or other alcohol (or a glass of purple grape juice) a day?

AND DRINK…

You don’t need a full 15 out of 15. In a study involving more than 900 participants, who were followed for nine years, an average score of 9.6 resulted in a 53 per cent reduction in Alzheimer’s risk. Those who scored 7.5 saw a 35 per cent reduction in risk.

Read more

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