Cut Down Your Risk of Dementia by Eating This Fruit

Strawberry consumption may significantly reduce the risk of dementia, a recent study found. The research focused on overweight individuals experiencing mild cognitive impairment, directing half to refrain from consuming any berries while the other half incorporated a daily intake equivalent to a cup of strawberries. eating strawberries 

 

After a 12-week period, people who consumed strawberry powder performed better on memory tests testing word recall, according to the findings of the study. The study builds on the team's prior research on blueberries, blackberries, and other berries that have been found to lower the incidence of dementia. This is because blueberries and strawberries are packed with antioxidants called anthocyanins, which combat free radicals, which cause chronic inflammation and are a risk factor for dementia.

Dr Robert Krikorian, lead study author and professor emeritus in the College of Medicine at the University of Cincinnati, said: 'There is epidemiological data suggesting that people who consume strawberries or blueberries regularly have a slower rate of cognitive decline with aging.' 

 

The researchers studied 30 overweight people, aged 50 to 65, with mild cognitive impairment due to their elevated risk of dementia. Over a 12-week period, participants were advised to avoid berries in favor of a daily supplement powder mixed with water at breakfast, which provided the nutritional equivalent of a cup of whole strawberries. 

 

The powder was given to half of the participants, while the remaining participants were provided with a placebo. Following this, they underwent memory tests, and researchers monitored their mood, level of depressive symptoms, and metabolic activity.

Participants who consumed strawberry powder performed better on memory tests and had a significant reduction in depressive symptoms.

Strawberries also have ellagitannins and ellagic acid, which have anti-inflammatory, antioxidant, antibacterial, and anticancer properties. Professor Krikorian claims that the strawberries studied in his study may improve cognitive performance by reducing brain inflammation.

 

As executive functions are prone to frequent deterioration during middle age, it is crucial to note that diseases like insulin resistance and obesity, which are characterized by surplus belly fat, are highly likely to aggravate inflammation, thus magnifying its impact on the brain. 

 

Given the middle-aged, overweight, and prediabetic makeup of their group, Krikorian believes that higher inflammation levels may have played a role in minor executive function impairment. As a result, the positive results they saw may be linked to the strawberry group's putative anti-inflammatory properties. 

 

Krikorian stressed the importance of future studies including a bigger participant pool and examining different strawberry dosage levels. 

 

The study was published in the journal Nutrients.

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New test can predict if coma patient will wake up in a year

The precise diagnosis and prognosis of recovery of consciousness of patients after a severe brain injury is a challenging clinical task, as some brain-injured patients retain certain levels of awareness despite appearing fully unresponsive.

Scientists have found that readily obtainable measures of the amount of glucose (sugar) consumed by the brain can directly predict a person's current level of awareness, or the likelihood that they will recover awareness within a year.

 "In nearly all cases, whole-brain energy turnover directly predicted either the current level of awareness or its subsequent recovery," said Ron Kupers from the Yale University in the US. "Our findings indicate that there is a minimal energetic requirement for sustained consciousness to arise after brain injury," said Kupers.

Researchers aimed to develop reliable diagnostic markers for the assessment of current and future levels of awareness to complement routine bedside clinical examinations. They quantified and mapped cerebral glucose metabolism in 131 brain-injured patients, all of whom were suffering from either full or partial loss of consciousness.

The researchers measured glucose metabolism using an imaging technique in which glucose labelled with a radioactive tracer molecule is injected into the bloodstream.

The results showed that the patients' individual levels of behavioural responsiveness were strongly linked to their overall cerebral energy turnover. Patients with glucose metabolism below a well-defined threshold of 42% of normal cortical activity appeared to be fully unconscious and did not recover consciousness at one-year follow-up.

In contrast, nearly all patients with brain metabolic activity above this energetic threshold either showed signs of awareness at the initial examination or had recovered responsiveness a year later.
The cerebral metabolic rate accounted for the current level or imminent return of awareness in 94% patients.

"The discovery of a clear metabolic boundary between the conscious and unconscious states could imply that the brain undergoes a fundamental state change at a certain level of energy turnover, in a sense that consciousness 'ignites' as brain activity reaches a certain threshold," said Johan Stender, University of Copenhagen in Denmark.

"The take-home message (for now) is that consciousness is a highly energy demanding process, involving the brain at large," Kupers said. "This fundamental physiological trait can help clinicians determine the potential for recovery of awareness in patients suffering from severe brain injuries of any kind," he said.

The research was published in the journal, Current Biology.

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